diff --git a/apps/studio/config/locales/en_US.json b/apps/studio/config/locales/en_US.json
index 613657f..74a23b7 100644
--- a/apps/studio/config/locales/en_US.json
+++ b/apps/studio/config/locales/en_US.json
@@ -209,13 +209,13 @@
     "view_mode_tip": "Image display mode while running",
     "replay_pipeline": "Recorded video (raw camera image)",
     "replay_pipeline_tip": "Replay shows the recorded raw camera image with no live arrow overlay; to get arrows and depth from analysis, use View → Analyze video",
-    "replay_raw_note": "A recording stores only the raw camera image: there is no flow or depth to draw, because this recording has no analysis result yet. Opening a recording runs the pass automatically, or press “Analyze video”; once a result exists this pane can draw arrows and the depth map",
+    "replay_raw_note": "No analysis result yet. Opening a recording runs analysis, or choose Analyze video… above.",
     "frame_missing_note": "This frame carries no {fields}: there is nothing for this view to draw",
     "field_flow": "flow",
     "field_depth": "depth",
     "recompute_pipeline": "Recomputed from the recording (not the recorded value)",
     "recompute_pipeline_tip": "This frame is what the current algorithm version computes for that footage — not the measurement that was recorded at the time.",
-    "replay_empty": "No recording open\nPress “Open recording…” below",
+    "replay_empty": "No video open\nChoose “Recorded video…” above",
     "arrow_empty": "No image yet\nPick a video or camera, then press Run",
     "arrow_empty_tip": "The deformation arrow image appears here while running or previewing",
     "arrow_render_failed": "Flow arrows could not be drawn for this frame\nTry another view, or reload the video",
@@ -244,7 +244,7 @@
     "mesh3d_reset_tip": "Reset view: back to the framing the scene itself uses",
     "replay_analysis_running": "this recording is being analysed: there are no arrows or depth to draw until it finishes. Progress and Cancel are on the analysis panel.",
     "replay_analysis_failed": "there is no analysis result to draw: {reason}. Only the raw camera image can be shown here; once that is dealt with, Analyze video runs the pass again by hand.",
-    "replay_analysis_unavailable": "this is not a recording that can be analysed (its folder has no session.json, or no raw_*.mp4 segment): no pass can run, so this panel shows the raw camera image only. For forces and deformation from this video use View > Analyze video."
+    "replay_analysis_unavailable": "This video has no analysis setup. Choose Analyze video… above to select one and generate results."
   },
   "chart": {
     "fn": "FN",
@@ -295,7 +295,7 @@
     "no_video": "This recording has no usable video segment",
     "open_failed": "Could not open that recording: {error}",
     "not_a_recording": "“{name}” is not a recording: its folder has no forces.csv (a recording is the video plus forces.csv and session.json). Replay needs a recording; to just watch this video, open it as a video or use View ▸ Analyze video.",
-    "video_only_opened": "“{name}” has no recording beside it (no forces.csv), so it is playing as a video: the picture and the timeline work, the force charts are empty. For forces and deformation use View ▸ Analyze video.",
+    "video_only_opened": "Opened “{name}”; no analysis result yet. Choose Analyze video… above to generate one.",
     "video_only_notice": "This video has no recording beside it (no forces.csv): it plays, but the force charts and the recording details are empty.",
     "video_only_panel": "This is not a recording, and this video cannot be decoded (no forces.csv beside it, and it does not read as playable video)\nYou can still try View ▸ Analyze video",
     "empty_recording": "This recording has no playable picture (no raw_*.mp4 segment), so it cannot be replayed",
@@ -449,8 +449,9 @@
     "phase_connecting": "Connecting",
     "phase_running": "Acquiring",
     "phase_error": "Error",
-    "rail_video_name": "Video file: {name}",
-    "rail_result_profile": "Result profile: {type}",
+    "rail_video_name": "Video: {name}",
+    "rail_recent_video": "Previous video: {name}",
+    "rail_result_profile": "Result: {type}",
     "rail_result_reused": "Stored result",
     "rail_result_complete": "Analysis complete",
     "rail_result_running": "Analysing…",
diff --git a/apps/studio/config/locales/zh_CN.json b/apps/studio/config/locales/zh_CN.json
index 9a3a2e7..8fe8532 100644
--- a/apps/studio/config/locales/zh_CN.json
+++ b/apps/studio/config/locales/zh_CN.json
@@ -209,13 +209,13 @@
     "view_mode_tip": "运行时的图像显示模式",
     "replay_pipeline": "录制视频（原始相机图像）",
     "replay_pipeline_tip": "回放显示的是录制下来的原始相机图像，不含实时箭头叠加；要看分析得到的箭头与深度请用「视图 → 分析视频」",
-    "replay_raw_note": "录像只保存原始相机图像：这里没有光流/深度可画，因为这个录像还没有分析结果。打开录像会自动跑一遍分析，也可以点「分析视频」手动生成；有结果后本面板就能画箭头和深度图",
+    "replay_raw_note": "尚无分析结果。打开录像会自动分析，或点顶部「分析视频…」。",
     "frame_missing_note": "本帧没有{fields}：这个视图这一帧没有数据可画",
     "field_flow": "光流",
     "field_depth": "深度",
     "recompute_pipeline": "由录像重算（非记录值）",
     "recompute_pipeline_tip": "这一帧是当前算法版本对录像重新计算得到的，不是当初记录下来的测量值。",
-    "replay_empty": "尚未打开录制\n点击下方「打开录制…」",
+    "replay_empty": "尚未打开录像\n点击顶部「选择录制视频…」",
     "arrow_empty": "尚未采集图像\n请选择视频或摄像机后点击「运行」",
     "arrow_empty_tip": "运行或预览后在此显示形变箭头图",
     "arrow_render_failed": "本帧无法绘制形变箭头\n请换一种视图，或重新加载视频",
@@ -244,7 +244,7 @@
     "mesh3d_reset_tip": "复位视角：回到场景自带的取景",
     "replay_analysis_running": "正在分析这个录像：跑完之前这里没有箭头/深度可画，进度与取消在分析面板上。",
     "replay_analysis_failed": "没有可画的分析结果：{reason}。这里只能显示原始相机图像；处理完之后可以点「分析视频」再跑一遍。",
-    "replay_analysis_unavailable": "这不是一条可分析的录像（同目录没有 session.json，或没有 raw_*.mp4 分段）：没有能跑的分析，本面板只能显示原始相机图像。要从这段视频得到力值/形变，请用 视图 ▸ 分析视频。"
+    "replay_analysis_unavailable": "视频尚无分析配置。点顶部「分析视频…」选择配置并生成结果。"
   },
   "chart": {
     "fn": "FN",
@@ -295,7 +295,7 @@
     "no_video": "这段录制没有可用的视频分段",
     "open_failed": "无法打开该录制: {error}",
     "not_a_recording": "「{name}」不是一条记录：同目录没有 forces.csv（一条记录 = 录像 + forces.csv + session.json）。回放需要记录；只想看这段视频请直接打开视频，或用「分析视频」。",
-    "video_only_opened": "「{name}」没有配套记录（无 forces.csv），已按视频播放：可以看画面与拖时间轴，力曲线为空。要得到力值/形变，请使用 视图 ▸ 分析视频。",
+    "video_only_opened": "已打开「{name}」；尚无分析结果。点顶部「分析视频…」生成。",
     "video_only_notice": "这段视频没有配套记录（同目录无 forces.csv）：可以播放，但力曲线与记录信息为空。",
     "video_only_panel": "这不是一条记录，而且无法解码这段视频（没有 forces.csv，也不像可播放的视频文件）\n可以试试 视图 ▸ 分析视频",
     "empty_recording": "这条记录没有可播放的画面（没有 raw_*.mp4 视频分段），因此无法回放",
@@ -449,8 +449,9 @@
     "phase_connecting": "连接中",
     "phase_running": "采集中",
     "phase_error": "出错",
-    "rail_video_name": "视频文件： {name}",
-    "rail_result_profile": "结果配置： {type}",
+    "rail_video_name": "视频：{name}",
+    "rail_recent_video": "上次视频：{name}",
+    "rail_result_profile": "结果：{type}",
     "rail_result_reused": "已复用缓存结果",
     "rail_result_complete": "分析完成",
     "rail_result_running": "正在分析…",
diff --git a/apps/studio/config/preferences.default.json b/apps/studio/config/preferences.default.json
index a14fd58..e0a96ee 100644
--- a/apps/studio/config/preferences.default.json
+++ b/apps/studio/config/preferences.default.json
@@ -6,6 +6,7 @@
   "camera_id": "0",
   "source_mode": "camera",
   "video_path": "",
+  "last_video_directory": "",
   "show_cal_panel": false,
   "show_finger_3d": true,
   "show_fps": false,
@@ -35,5 +36,5 @@
   "finger_2d_orientation": "rotate180",
   "settings_expanded": false,
   "view_preset": "custom",
-  "splitter_sizes": [340, 480, 400]
+  "splitter_sizes": [560, 400, 480, 0]
 }
diff --git a/apps/studio/src/orisys_studio/app_window.py b/apps/studio/src/orisys_studio/app_window.py
index 51ca051..c9d1780 100644
--- a/apps/studio/src/orisys_studio/app_window.py
+++ b/apps/studio/src/orisys_studio/app_window.py
@@ -84,14 +84,14 @@ RUNNABLE_TYPES = frozenset({"box", "mini", "finger", "finger-mems"})
 #: Types whose 2D arrow view is rotated 90° (the sensor is mounted that way). finger-mems is
 #: a box-style stitched camera, so it rotates like box until the device says otherwise.
 ARROW_ROTATE_TYPES = frozenset({"box", "mini", "finger-mems"})
-DEFAULT_SPLITTER_SIZES = (620, 320, 500)
+DEFAULT_SPLITTER_SIZES = (560, 400, 480)
 MIN_PANEL_WIDTHS = {
     # The 3D pane used to be the one panel whose content was a stack of form fields, so
     # its minimum was measured under the stylesheet in both languages (241 px in English)
     # and could not go below 260. The controls now live in the settings dialog and what
     # is left wraps, so the pane can be dragged narrow again — the picture is the point.
     "mesh3d": 200,
-    "arrow": 300,
+    "arrow": 380,
     "plots": 340,
     "cal": 300,
 }
@@ -101,13 +101,11 @@ VIEW_PRESETS = ("custom", "live", "replay", "calibration")
 
 #: Splitter sizes per view, in panel order (3D, 2D, charts, calibration).
 #: ``custom`` keeps whatever the user arranged (see ``_restore_splitter_sizes``).
-#: Replay is the live layout on purpose: the two views differ in their source
-#: (a camera, or a recorded video), not in their furniture.
-#: The 3D pane is the widest of the three: it is the view's subject when it is on, and
-#: the 2D panel is a reading of the same measurement rather than a second subject.
+#: Live gives the 3D picture the most width; replay gives the history chart the
+#: most width. Both keep the 2D picture large enough to inspect marker detail.
 VIEW_SPLITTER_SIZES = {
-    "live": (620, 300, 520, 0),
-    "replay": (620, 300, 520, 0),
+    "live": (560, 400, 480, 0),
+    "replay": (480, 400, 560, 0),
     "calibration": (0, 0, 560, 880),
 }
 #: The 3D pane belongs to the live view and to history browsing, and only for a
@@ -1488,7 +1486,12 @@ class StudioMainWindow(QMainWindow):
         if self._view_preset == "replay":
             path = self.toolbar.video_path()
             if path:
-                detail = t("status.rail_video_name", name=Path(path).name)
+                key = (
+                    "status.rail_video_name"
+                    if self.replay.has_video()
+                    else "status.rail_recent_video"
+                )
+                detail = t(key, name=Path(path).name)
             # Name the *result's* profile and whether it was reused or just finished, so
             # changing the sensor picker cannot look like the open figures came from the
             # newly selected product.
@@ -1497,11 +1500,8 @@ class StudioMainWindow(QMainWindow):
                 provenance = getattr(getattr(session, "reader", None), "provenance", None)
                 result_type = str(getattr(provenance, "sensor_type", "") or "").strip()
                 if result_type:
-                    detail = (
-                        f"{detail} · {t('status.rail_result_profile', type=result_type)}"
-                        if detail
-                        else t("status.rail_result_profile", type=result_type)
-                    )
+                    result_label = t("status.rail_result_profile", type=result_type)
+                    detail = f"{result_label} · {detail}" if detail else result_label
                 progress = getattr(self.replay_ctl, "_progress", None)
                 progress_state = (
                     str(progress.state()) if progress is not None and hasattr(progress, "state") else ""
@@ -1534,7 +1534,7 @@ class StudioMainWindow(QMainWindow):
         # The full path and the replay's notes do not fit on a 30 px rail, so
         # they live in the summary's tooltip (the bar that used to show them is
         # gone: the two views share one layout).
-        tip_parts = [self.toolbar.video_path()]
+        tip_parts = [detail, self.toolbar.video_path()]
         if self._view_preset == "replay" and self.replay.has_video():
             # Includes the "this is a video, not a recording" note for a bare video.
             tip_parts.append(self.replay.warnings_text())
@@ -1999,6 +1999,11 @@ class StudioMainWindow(QMainWindow):
     def _on_sensor_type_changed(self, sensor_type: str) -> None:
         self.prefs["sensor_type"] = str(sensor_type)
         self.prefs["config_name"] = self.sensor_picker.config_name()
+        if sensor_type == "finger":
+            # Entering Finger opens its principal view even if an earlier session
+            # left the optional pane turned off. The user can still turn it off.
+            self._show_finger_3d = True
+            self.prefs["show_finger_3d"] = True
         self.cal_panel.set_meta_context(
             sensor_type=str(sensor_type),
             config_ref=self._resolve_config_ref(),
@@ -2006,6 +2011,7 @@ class StudioMainWindow(QMainWindow):
         # A different product is a different UV island; the previous latch must not
         # paint the new canvas (a box result has no mask and would inherit a finger's).
         self._domain_mask.reset()
+        self.mesh3d_panel.show_reference_only()
         # The pane follows the sensor: a box sensor has no 3D scene, and a finger's
         # missing package must not be reported while looking at a box.
         self.layout_ctl.sync_3d_source()
@@ -2941,6 +2947,13 @@ class StudioMainWindow(QMainWindow):
         policy is the open session's ``paint_policy``, so 3D arrows share the 2D canvas's
         grid and threshold (including the box painter's 2 px floor).
         """
+        session = self.replay_ctl.available_result()
+        provenance = getattr(getattr(session, "reader", None), "provenance", None)
+        result_type = str(getattr(provenance, "sensor_type", "") or "").strip()
+        if result_type and result_type != self.sensor_picker.sensor_type():
+            # The old replay stays inspectable after a sensor switch, but its
+            # depth grid must never be submitted to the new sensor's 3D scene.
+            return
         view = self.mesh3d_panel.view
         if view is None:
             return
diff --git a/apps/studio/src/orisys_studio/replay_controller.py b/apps/studio/src/orisys_studio/replay_controller.py
index 0f5d9b3..71c8d1e 100644
--- a/apps/studio/src/orisys_studio/replay_controller.py
+++ b/apps/studio/src/orisys_studio/replay_controller.py
@@ -238,7 +238,7 @@ class ReplayController(QObject):
         *video* (what the operator recognises) and the charts pair it with the
         ``forces.csv`` written beside it.
         """
-        start = str(recordings_dir())
+        start = self._video_dialog_directory(recordings_dir())
         chosen, _filter = QFileDialog.getOpenFileName(
             self._dialog_parent(),
             t("playback.open"),
@@ -247,6 +247,7 @@ class ReplayController(QObject):
         )
         if not chosen:
             return
+        self._remember_video_directory(Path(chosen))
         self.load_video(Path(chosen))
 
     def on_browse_video(self) -> None:
@@ -258,7 +259,7 @@ class ReplayController(QObject):
         """
         if self._host.running or self._host.preview_open:
             return
-        start = self._toolbar.video_path() or str(Path.home())
+        start = self._video_dialog_directory(Path.home())
         path, _ = QFileDialog.getOpenFileName(
             self._dialog_parent(),
             t("menu.open_video"),
@@ -267,8 +268,25 @@ class ReplayController(QObject):
         )
         if not path:
             return
+        self._remember_video_directory(Path(path))
         self.load_video(Path(path))
 
+    def _video_dialog_directory(self, fallback: Path) -> str:
+        """Start both video pickers in the last directory the operator chose."""
+        saved = str(self._host.prefs.get("last_video_directory") or "")
+        if saved and Path(saved).is_dir():
+            return saved
+        current = self._toolbar.video_path()
+        if current and Path(current).parent.is_dir():
+            return str(Path(current).parent)
+        return str(fallback)
+
+    def _remember_video_directory(self, video: Path) -> None:
+        directory = video.parent
+        if directory.is_dir():
+            self._host.prefs["last_video_directory"] = str(directory)
+            self._host.persist_prefs()
+
     def on_recompute_button(self) -> None:
         """The replay view's own entry for the processed picture."""
         if self._actions is None:
@@ -1415,12 +1433,14 @@ class ReplayController(QObject):
         if self._charts.is_recording_source():
             self._charts.clear_recording_source()
         self._charts.follow_latest()
-        self._image_panel.set_source_kind("live")
+        self._image_panel.set_source_kind("replay" if active else "live")
         # The panel held a recorded frame: the next live packet must repaint it, so the
         # "already rendered" marker is dropped.
         self._host.drop_render_marker()
         if not self._host.running and not self._host.preview_open:
-            self._image_panel.clear_preview(t("panels.arrow_empty"))
+            self._image_panel.clear_preview(
+                t("panels.replay_empty" if active else "panels.arrow_empty")
+            )
 
     def _serve_curves(self, session: AnalysisSession | None = None) -> str:
         """Point the charts at the force trace this timeline really has, and label it.
diff --git a/apps/studio/src/orisys_studio/view_layout.py b/apps/studio/src/orisys_studio/view_layout.py
index 53a0a50..c45b545 100644
--- a/apps/studio/src/orisys_studio/view_layout.py
+++ b/apps/studio/src/orisys_studio/view_layout.py
@@ -193,12 +193,10 @@ class ViewLayoutController(QObject):
         self._cal_panel.setMinimumWidth(self._min_panel_widths["cal"])
         self._set_check(self._actions.finger_3d if self._actions else None, show_3d, enabled=is_finger)
         self._set_check(self._actions.cal_panel if self._actions else None, show_cal)
-        # Panel weights: the charts are the widest panel in a view without 3D, the 3D
-        # pane is the widest one when it is on (it is the subject, not an inset), and
-        # the 2D panel is deliberately the smaller one.
-        arrow_weight = 3
-        plots_weight = 4
-        mesh_weight = 5
+        # Keep each preset's panel priority when the window is resized.
+        arrow_weight = 4
+        plots_weight = 5 if preset == "replay" else 4
+        mesh_weight = 4 if preset == "replay" else 5
         for i in range(self._splitter.count()):
             widget = self._splitter.widget(i)
             if widget is self._mesh_panel:
diff --git a/apps/studio/tests/test_replay_video_directory.py b/apps/studio/tests/test_replay_video_directory.py
new file mode 100644
index 0000000..95d4519
--- /dev/null
+++ b/apps/studio/tests/test_replay_video_directory.py
@@ -0,0 +1,54 @@
+"""The two video pickers share the last directory chosen by the operator."""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from PySide6.QtWidgets import QApplication
+
+import orisys_studio.replay_controller as replay_controller
+
+
+def test_both_video_pickers_recall_the_last_chosen_directory(
+    make_window, monkeypatch, tmp_path
+):
+    window = make_window(sensor_type="box")
+    window.show()
+    window.brand_bar.btn_playback.click()
+    QApplication.processEvents()
+
+    first = tmp_path / "first"
+    second = tmp_path / "second"
+    first.mkdir()
+    second.mkdir()
+    window.prefs["last_video_directory"] = str(first)
+    chosen = [second / "first.mp4", first / "second.mp4"]
+    starts: list[str] = []
+
+    def choose(_parent, _title, start, _filter):
+        starts.append(start)
+        return str(chosen[len(starts) - 1]), ""
+
+    monkeypatch.setattr(replay_controller.QFileDialog, "getOpenFileName", choose)
+    monkeypatch.setattr(window.replay_ctl, "load_video", lambda _video: True)
+
+    window.replay_ctl.on_open_recording()
+    assert starts == [str(first)]
+    assert window.prefs["last_video_directory"] == str(second)
+
+    window.replay_ctl.on_browse_video()
+    assert starts == [str(first), str(second)]
+    assert window.prefs["last_video_directory"] == str(first)
+    saved = json.loads((tmp_path / "preference.json").read_text(encoding="utf-8"))
+    assert saved["last_video_directory"] == str(first)
+
+
+def test_missing_remembered_directory_falls_back_to_current_video(make_window, tmp_path):
+    window = make_window(sensor_type="box")
+    current = tmp_path / "clip.mp4"
+    current.write_bytes(b"fixture")
+    window.prefs["last_video_directory"] = str(tmp_path / "removed")
+    window.toolbar.set_video_path(str(current))
+
+    assert window.replay_ctl._video_dialog_directory(Path.home()) == str(tmp_path)
diff --git a/apps/studio/tests/test_sensor_switch_window.py b/apps/studio/tests/test_sensor_switch_window.py
index 2aed373..e5ee545 100644
--- a/apps/studio/tests/test_sensor_switch_window.py
+++ b/apps/studio/tests/test_sensor_switch_window.py
@@ -51,6 +51,45 @@ def _pick(window, sensor_type: str) -> None:
     combo.setCurrentIndex(combo.findData(sensor_type))
 
 
+def test_switching_to_finger_enables_3d_after_an_earlier_off_choice(qt_app, make_window):
+    window = make_window(sensor_type="box", show_finger_3d=False)
+    window.show()
+    qt_app.processEvents()
+    try:
+        assert not window._show_finger_3d
+        _pick(window, "finger")
+        qt_app.processEvents()
+        assert window._show_finger_3d
+        assert window.prefs["show_finger_3d"] is True
+        assert window.mesh3d_panel.isVisible()
+        assert window.act_finger_3d.isChecked()
+
+        window.layout_ctl.on_finger_3d_toggled(False)
+        assert not window._show_finger_3d
+        _pick(window, "box")
+        _pick(window, "finger")
+        qt_app.processEvents()
+        assert window.mesh3d_panel.isVisible()
+        assert window.act_finger_3d.isChecked()
+    finally:
+        window.close()
+
+
+def test_replay_keeps_the_marker_image_readable_in_a_1197px_window(qt_app, make_window):
+    window = make_window(sensor_type="finger", show_finger_3d=True)
+    window.resize(1197, 820)
+    window.show()
+    qt_app.processEvents()
+    try:
+        window.brand_bar.btn_playback.click()
+        qt_app.processEvents()
+        assert window.mesh3d_panel.isVisible()
+        assert window.arrow_panel.width() >= 380
+        assert window.force_plots.width() > window.arrow_panel.width()
+    finally:
+        window.close()
+
+
 def test_reserving_the_native_handle_costs_nothing_at_construction(qt_app, make_window):
     """The handle is reserved, and reserving it does not build the pane.
 
diff --git a/apps/studio/tests/test_ui_smoke.py b/apps/studio/tests/test_ui_smoke.py
index 6fa1b0c..e8951e8 100644
--- a/apps/studio/tests/test_ui_smoke.py
+++ b/apps/studio/tests/test_ui_smoke.py
@@ -2830,6 +2830,88 @@ def test_the_rail_reads_the_rate_and_what_it_cost(qt_app, make_window):
     window.close()
 
 
+def test_replay_without_a_video_names_the_visible_picker(qt_app, make_window):
+    from orisys_app_shared.i18n import t
+
+    window = make_window(sensor_type="box")
+    window.brand_bar.btn_playback.click()
+    qt_app.processEvents()
+
+    assert window.arrow_panel.image_label.text() == t("panels.replay_empty")
+    assert window.toolbar.btn_replay_video.text() in t("panels.replay_empty")
+    window.close()
+
+
+def test_a_remembered_video_is_not_described_as_open(make_window):
+    from orisys_app_shared.i18n import t
+
+    window = make_window(sensor_type="finger", video_path="D:/clips/old.mp4")
+    window.brand_bar.btn_playback.click()
+    window._refresh_status_rail()
+
+    assert not window.replay.has_video()
+    assert window.toolbar.source_summary.text() == t(
+        "status.rail_recent_video", name="old.mp4"
+    )
+
+
+def test_the_rail_puts_result_identity_before_a_long_video_name(
+    qt_app, make_window, monkeypatch
+):
+    from types import SimpleNamespace
+
+    from orisys_app_shared.i18n import t
+
+    window = make_window(sensor_type="finger")
+    window.resize(1197, 752)
+    window.show()
+    window.brand_bar.btn_playback.click()
+    window.toolbar.set_video_path("D:/very-long-recording-name-for-a-box-sensor.mp4")
+    session = SimpleNamespace(
+        reader=SimpleNamespace(provenance=SimpleNamespace(sensor_type="box"))
+    )
+    monkeypatch.setattr(window.replay_ctl, "available_result", lambda: session)
+    window._refresh_status_rail()
+    qt_app.processEvents()
+
+    prefix = t("status.rail_result_profile", type="box")
+    label = window.toolbar.source_summary
+    assert label.text().startswith(prefix), label.text()
+    assert label.fontMetrics().horizontalAdvance(prefix) <= label.width(), (
+        "the result's sensor disappears from the visible rail"
+    )
+    window.close()
+
+
+def test_old_result_depth_is_not_sent_to_the_new_sensor_scene(make_window, monkeypatch):
+    from types import SimpleNamespace
+
+    window = make_window(sensor_type="finger")
+    session = SimpleNamespace(
+        reader=SimpleNamespace(provenance=SimpleNamespace(sensor_type="box")),
+        paint_policy=lambda: None,
+    )
+    monkeypatch.setattr(window.replay_ctl, "available_result", lambda: session)
+    submitted = []
+    fake_view = SimpleNamespace(
+        set_overlay_policy=lambda _policy: None,
+        submit_packet=submitted.append,
+    )
+    panel = window.mesh3d_panel
+    real_view = panel._view
+    panel._view = fake_view
+    monkeypatch.setattr(window, "_connect_analysis_display", lambda _panel: True)
+    monkeypatch.setattr(window, "_tick_analysis_3d", lambda: None)
+    try:
+        window._show_analysis_frame("old box packet")
+        assert submitted == []
+        session.reader.provenance.sensor_type = "finger"
+        window._show_analysis_frame("finger packet")
+        assert submitted == ["finger packet"]
+    finally:
+        panel._view = real_view
+
+
 def test_the_camera_probe_is_usable_without_a_camera(capsys):
     """The probe has to be safe to run on a machine with no camera attached."""
     import camera_probe
diff --git a/apps/studio/tests/test_view_layout.py b/apps/studio/tests/test_view_layout.py
index 7289730..96e5233 100644
--- a/apps/studio/tests/test_view_layout.py
+++ b/apps/studio/tests/test_view_layout.py
@@ -304,9 +304,23 @@ def test_the_shipped_live_layout_makes_the_3d_pane_the_widest_panel():
     assert mesh > charts, DEFAULT_SPLITTER_SIZES
     live_mesh, live_image, live_charts, _cal_live = LIVE["live"]
     assert live_mesh > live_image and live_mesh > live_charts, LIVE["live"]
-    assert LIVE["replay"] == LIVE["live"], (
-        "the replay view is the live layout with another source"
+    assert LIVE["replay"][2] > LIVE["replay"][0], (
+        "history browsing needs more chart width than 3D width"
     )
+    assert LIVE["live"][1] >= 400 and LIVE["replay"][1] >= 400, (
+        "the 2D marker picture is too narrow to inspect"
+    )
+
+
+def test_panel_stretch_keeps_each_views_priority_after_resizing():
+    controller, parts = _controller(prefs={"view_preset": "live"}, sensor_type="finger")
+    controller.show_finger_3d = True
+
+    controller.apply_panel_visibility()
+    assert dict(parts["splitter"].stretches) == {0: 5, 1: 4, 2: 4, 3: 0}
+
+    controller.apply_preset("replay")
+    assert dict(parts["splitter"].stretches) == {0: 4, 1: 4, 2: 5, 3: 0}
 
 
 def test_the_calibration_panel_toggle_is_the_calibration_view_switch():
diff --git a/shared/src/orisys_app_shared/prefs/store.py b/shared/src/orisys_app_shared/prefs/store.py
index 9a38c15..65035d8 100644
--- a/shared/src/orisys_app_shared/prefs/store.py
+++ b/shared/src/orisys_app_shared/prefs/store.py
@@ -38,6 +38,7 @@ _DEFAULTS: dict[str, Any] = {
     "camera_id": "0",
     "source_mode": "camera",
     "video_path": "",
+    "last_video_directory": "",
     "show_cal_panel": False,
     "show_finger_3d": True,
     "sensor_type": "box",
@@ -84,7 +85,7 @@ _DEFAULTS: dict[str, Any] = {
     #: Top-level view: "custom" (a hand-arranged layout), "live", "replay" or
     #: "calibration". Each view is a layout of the same window.
     "view_preset": "custom",
-    "splitter_sizes": [340, 480, 400],
+    "splitter_sizes": [560, 400, 480, 0],
     "window_default_size": [1440, 880],
 }