Bound zxdg_decoration_manager_v1 for compositors that support server-side decorations. Fixed a resize deadlock. Fixed scroll box list rendering.

lib/ui/src/layout.rs

@@ -577,7 +577,13 @@ fn layout_element(
         text_system,
         perf_stats,
         layout_cache,
-        clip_rect,
+        // Do NOT propagate clip_rect into children: the scroll-box PushClip already clips
+        // them visually, and propagating the clip causes the layout cache to bake in
+        // culling results for a specific scroll position.  When the scroll changes, the
+        // same cache entry would replay with stale "empty" children that were culled at
+        // the previous offset.  Culling applies only at the direct-child level of the
+        // scroll box (which passes Some(viewport_rect) to layout_container_children).
+        None,
     );
 
     if pushed_clip {