Fix PDF text selection locked out on touch devices (#6656)

frontend/editor/src/core/components/viewer/LocalEmbedPDF.tsx

@@ -243,12 +243,12 @@ export function LocalEmbedPDF({
         drawBlackBoxes: false,
       }),
 
-      // Register pan plugin (depends on Viewport, InteractionManager)
-      createPluginRegistration(PanPluginPackage, {
-        defaultMode: "mobile", // Try mobile mode which might be more permissive
-      }),
-      // Register pan plugin (depends on Viewport, InteractionManager) - keep disabled to prevent drag panning
-      createPluginRegistration(PanPluginPackage, {}),
+      // Register pan plugin (depends on Viewport, InteractionManager).
+      // Keep the default mode ("never"). Do NOT set defaultMode: "mobile" - the pan
+      // react layer makes pan the default interaction on any touch-capable device
+      // (navigator.maxTouchPoints > 0), e.g. Windows touchscreen laptops, which then
+      // permanently locks the viewer in pan mode and blocks all text selection.
+      createPluginRegistration(PanPluginPackage),
 
       // Register zoom plugin with configuration
       createPluginRegistration(ZoomPluginPackage, {

frontend/editor/src/core/components/viewer/LocalEmbedPDFWithAnnotations.tsx

@@ -300,10 +300,11 @@ export const LocalEmbedPDFWithAnnotations = forwardRef<
           selectAfterCreate: true,
         }),
 
-        // Register pan plugin
-        createPluginRegistration(PanPluginPackage, {
-          defaultMode: "mobile",
-        }),
+        // Register pan plugin. Keep the default mode ("never"). Do NOT set
+        // defaultMode: "mobile" - it makes pan the default interaction on any
+        // touch-capable device (e.g. Windows touchscreen laptops) and blocks
+        // text selection.
+        createPluginRegistration(PanPluginPackage),
 
         // Register zoom plugin
         createPluginRegistration(ZoomPluginPackage, {