feat(settings): when switching settings panel mode, close and reopen the settings to see the actual change

Modules/Panels/Settings/SettingsPanelWindow.qml

@@ -38,6 +38,10 @@ FloatingWindow {
         settingsContent._pendingSubTab = subTabId;
       settingsContent.initialize();
       isInitialized = true;
+      // Tab content persists in window mode; if no subtab specified and the
+      // tab content is still loaded (same tab), reset to first subtab
+      if (subTabId < 0 && settingsContent.activeTabContent)
+        settingsContent.setSubTabIndex(0);
     }
   }
 

Modules/Panels/Settings/Tabs/UserInterface/PanelsSubTab.qml

@@ -3,6 +3,8 @@ import QtQuick.Controls
 import QtQuick.Layouts
 import Quickshell
 import qs.Commons
+import qs.Modules.Panels.Settings // For SettingsPanel
+import qs.Services.UI
 import qs.Widgets
 
 ColumnLayout {
@@ -67,6 +69,7 @@ ColumnLayout {
     label: I18n.tr("panels.user-interface.settings-panel-mode-label")
     description: I18n.tr("panels.user-interface.settings-panel-mode-description")
     Layout.fillWidth: true
+    minimumWidth: 220 * Style.uiScaleRatio
     model: [
       {
         "key": "attached",
@@ -83,8 +86,21 @@ ColumnLayout {
     ]
     currentKey: Settings.data.ui.settingsPanelMode
     defaultValue: Settings.getDefaultValue("ui.settingsPanelMode")
-    onSelected: key => Settings.data.ui.settingsPanelMode = key
-    minimumWidth: 220 * Style.uiScaleRatio
+    onSelected: key => {
+                  // Defer setup to next update so close can do its work properly
+                  Qt.callLater(() => {
+                                 Settings.data.ui.settingsPanelMode = key;
+                               });
+                  if (Settings.data.ui.settingsPanelMode === "window" || key === "window") {
+                    // Just switched from/to window, need to close panel
+                    var screen = PanelService.openedPanel?.screen || SettingsPanelService.settingsWindow?.screen || PanelService.findScreenForPanels();
+                    SettingsPanelService.close(screen);
+
+                    Qt.callLater(() => {
+                                   SettingsPanelService.openToTab(SettingsPanel.Tab.UserInterface, 1, screen);
+                                 });
+                  }
+                }
   }
 
   NToggle {