diff --git a/apps/ai-game-creator-shell/src/view/ui-editor/components/UiTreePanel.tsx b/apps/ai-game-creator-shell/src/view/ui-editor/components/UiTreePanel.tsx
index ae521ce83..14fde9869 100644
--- a/apps/ai-game-creator-shell/src/view/ui-editor/components/UiTreePanel.tsx
+++ b/apps/ai-game-creator-shell/src/view/ui-editor/components/UiTreePanel.tsx
@@ -206,7 +206,6 @@ export function UiTreePanel({
 }: UiTreePanelProps) {
   const treeApiRef = useRef<TreeApi<UiNode> | undefined>(undefined);
   const treeContainerRef = useRef<HTMLDivElement>(null);
-  const treeSizerRef = useRef<HTMLDivElement>(null);
   const [treeHeight, setTreeHeight] = useState(0);
   const [treeWidth, setTreeWidth] = useState(0);
   const [contextMenu, setContextMenu] = useState<{
@@ -246,21 +245,29 @@ export function UiTreePanel({
     return rows;
   }, [root]);
 
+  const treeContentWidth = useMemo(
+    () =>
+      treeRows.reduce((width, { node, depth }) => {
+        const labelWidth = Math.max(
+          56,
+          (node.metadata.name || '未命名节点').length * 8,
+        );
+        return Math.max(width, 16 + depth * 16 + 24 + labelWidth + 42 + 52);
+      }, 0),
+    [treeRows],
+  );
+
   useEffect(() => {
-    const sizer = treeSizerRef.current;
     const container = treeContainerRef.current;
-    if (!sizer || !container) return;
+    if (!container) return;
     const updateWidth = () => {
-      setTreeWidth(
-        Math.max(Math.ceil(sizer.scrollWidth), container.clientWidth),
-      );
+      setTreeWidth(Math.max(treeContentWidth, container.clientWidth));
     };
     updateWidth();
     const resizeObserver = new ResizeObserver(updateWidth);
-    resizeObserver.observe(sizer);
     resizeObserver.observe(container);
     return () => resizeObserver.disconnect();
-  }, [treeRows]);
+  }, [treeContentWidth]);
 
   const handleMove: MoveHandler<UiNode> = ({
     dragIds,
@@ -334,35 +341,6 @@ export function UiTreePanel({
         ref={treeContainerRef}
         className="relative min-h-0 flex-1 overflow-x-auto overflow-y-hidden"
       >
-        <div
-          ref={treeSizerRef}
-          aria-hidden="true"
-          className="pointer-events-none absolute left-0 top-0 invisible flex w-max flex-col whitespace-nowrap px-2 text-xs"
-        >
-          {treeRows.map(({ node, depth }) => (
-            <div
-              key={node.id}
-              className="flex h-[34px] items-center gap-1"
-              style={{ paddingLeft: depth * 16 }}
-            >
-              <span className="size-6 shrink-0" />
-              <span className="shrink-0">
-                {node.metadata.name || '未命名节点'}
-              </span>
-              <span className="inline-flex shrink-0 items-center gap-0.5 rounded-md px-1 py-0.5 text-[10px] leading-none">
-                <Puzzle
-                  size={11}
-                  className="text-orange-600"
-                  fill="currentColor"
-                  strokeWidth={1.5}
-                  aria-hidden="true"
-                />
-                <span>{node.components.length}</span>
-              </span>
-              <span className="w-[52px] shrink-0" />
-            </div>
-          ))}
-        </div>
         {root && treeHeight > 0 ? (
           <Tree<UiNode>
             ref={treeApiRef}
diff --git a/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/PreviewWorkspace.tsx b/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/PreviewWorkspace.tsx
index a85ecf46d..df640566d 100644
--- a/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/PreviewWorkspace.tsx
+++ b/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/PreviewWorkspace.tsx
@@ -512,7 +512,10 @@ export function PreviewWorkspace({
             onScaleFromCenter={scaleViewportFromCenter}
           >
             {(actions) => (
-              <div className="absolute bottom-3 right-3 z-10 flex items-center gap-1 rounded-lg border border-(--platform-subpanel-border) bg-white/90 p-1 shadow-lg">
+              <div
+                className="absolute bottom-3 right-3 z-10 flex items-center gap-1 rounded-lg border border-(--platform-subpanel-border) bg-white/90 p-1 shadow-lg"
+                data-ui-editor-zoom-controls
+              >
                 <button
                   type="button"
                   className="grid size-8 place-items-center rounded hover:bg-black/5"
diff --git a/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/UiTreeRenderer.tsx b/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/UiTreeRenderer.tsx
index 34f624152..b8873be1a 100644
--- a/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/UiTreeRenderer.tsx
+++ b/apps/ai-game-creator-shell/src/view/ui-editor/components/preview/UiTreeRenderer.tsx
@@ -90,7 +90,7 @@ function RenderNode({
   selectedNodeId,
   resources,
   onSelectNode,
-  consumeNodeClick = () => false,
+  consumeNodeClick,
   onNodeContextMenu,
   onNodePointerDown,
   onNodePointerMove,
@@ -107,6 +107,8 @@ function RenderNode({
   isRoot?: boolean;
   parentContainer?: UiNode['layout']['container'];
 }) {
+  const hasClickGestureConsumer = consumeNodeClick !== undefined;
+  const consumeClick = consumeNodeClick ?? (() => false);
   const activePreviewTransforms = previewTransforms ?? EMPTY_PREVIEW_TRANSFORMS;
   if (hiddenNodeIds.has(node.id)) return null;
   const previewTransform = activePreviewTransforms.get(node.id);
@@ -158,11 +160,12 @@ function RenderNode({
         hasDirectPointerGesture
           ? (event) => {
               event.stopPropagation();
-              consumeNodeClick();
+              if (consumeClick()) return;
+              if (hasClickGestureConsumer) onSelectNode(node.id);
             }
           : (event) => {
               event.stopPropagation();
-              if (consumeNodeClick()) return;
+              if (consumeClick()) return;
               onSelectNode(node.id);
             }
       }
diff --git a/apps/ai-game-creator-shell/src/view/ui-editor/uiEditorKeyboardShortcuts.ts b/apps/ai-game-creator-shell/src/view/ui-editor/uiEditorKeyboardShortcuts.ts
index 90657f5b4..5ce9ad4cc 100644
--- a/apps/ai-game-creator-shell/src/view/ui-editor/uiEditorKeyboardShortcuts.ts
+++ b/apps/ai-game-creator-shell/src/view/ui-editor/uiEditorKeyboardShortcuts.ts
@@ -21,10 +21,11 @@ function isEditableTarget(target: EventTarget | null) {
 
 function isInteractiveTarget(target: EventTarget | null) {
   const element = target instanceof Element ? target : null;
+  if (element?.closest('[data-ui-editor-zoom-controls]')) return false;
   return Boolean(
     (target instanceof HTMLElement && target.isContentEditable) ||
       element?.closest(
-        'button, a, input, textarea, select, [contenteditable="true"], [role="button"], [role="dialog"], [aria-modal="true"]',
+        'button, a, input:not([type="range"]), textarea, select, [contenteditable="true"], [role="button"], [role="dialog"], [aria-modal="true"]',
       ),
   );
 }
diff --git a/apps/ai-game-creator-shell/tests/uiEditorKeyboardShortcuts.test.ts b/apps/ai-game-creator-shell/tests/uiEditorKeyboardShortcuts.test.ts
index 51ccc3514..62dd1f105 100644
--- a/apps/ai-game-creator-shell/tests/uiEditorKeyboardShortcuts.test.ts
+++ b/apps/ai-game-creator-shell/tests/uiEditorKeyboardShortcuts.test.ts
@@ -59,4 +59,49 @@ describe('ui editor keyboard shortcuts', () => {
     expect(historyUndo).toHaveBeenCalledTimes(1);
     window.removeEventListener('keydown', listener);
   });
+
+  it('keeps node deletion available when the zoom slider has focus', () => {
+    const slider = document.createElement('input');
+    slider.type = 'range';
+    document.body.append(slider);
+    const deleteNode = vi.fn(() => ({ ok: true }));
+    const listener = (event: KeyboardEvent) =>
+      handleUiEditorKeyDown(event, {
+        selectedNodeId: 'node-1',
+        activeImageId: 'page-1',
+        deleteNode,
+        historyUndo: vi.fn(() => true),
+        historyRedo: vi.fn(() => true),
+      });
+    window.addEventListener('keydown', listener);
+
+    fireEvent.keyDown(slider, { key: 'Delete' });
+
+    expect(deleteNode).toHaveBeenCalledWith('node-1', 'page-1');
+    window.removeEventListener('keydown', listener);
+  });
+
+  it('keeps node deletion available after a zoom button is clicked', () => {
+    const zoomControls = document.createElement('div');
+    zoomControls.setAttribute('data-ui-editor-zoom-controls', '');
+    const zoomIn = document.createElement('button');
+    zoomControls.append(zoomIn);
+    document.body.append(zoomControls);
+    const deleteNode = vi.fn(() => ({ ok: true }));
+    const listener = (event: KeyboardEvent) =>
+      handleUiEditorKeyDown(event, {
+        selectedNodeId: 'node-1',
+        activeImageId: 'page-1',
+        deleteNode,
+        historyUndo: vi.fn(() => true),
+        historyRedo: vi.fn(() => true),
+      });
+    window.addEventListener('keydown', listener);
+
+    fireEvent.click(zoomIn);
+    fireEvent.keyDown(zoomIn, { key: 'Delete' });
+
+    expect(deleteNode).toHaveBeenCalledWith('node-1', 'page-1');
+    window.removeEventListener('keydown', listener);
+  });
 });
diff --git a/docs/【交互设计】预览画布缩放滑杆-2026-09-05.md b/docs/【交互设计】预览画布缩放滑杆-2026-09-05.md
index b251156a9..eb518c538 100644
--- a/docs/【交互设计】预览画布缩放滑杆-2026-09-05.md
+++ b/docs/【交互设计】预览画布缩放滑杆-2026-09-05.md
@@ -11,6 +11,7 @@
 - 保留 `−` 与 `+` 按钮。点击轨道可跳转，拖动滑块实时更新画布和百分比。
 - 缩放以视口中心为中心，继续支持 Ctrl/Cmd + 滚轮缩放。
 - 滑杆支持方向键、Home、End；百分比文本可点击编辑并在失焦时限制到有效范围。
+- 缩放滑杆即使处于焦点，也不得拦截 UI 节点的 Delete/Backspace 快捷删除。
 - Windows/Linux 使用 `Ctrl`，macOS 使用 `Cmd`；`+`、`=` 与 `NumpadAdd` 放大，`-` 与 `NumpadSubtract` 缩小，允许按键重复时连续缩放。
 - 快捷键直接复用现有 `+`/`−` 按钮动作：以视口中心为锚点，按 `×1.16`/`×0.86` 改变缩放。
 - 鼠标悬停在预览画布上，或预览画布已获得键盘焦点时，快捷键生效。预览画布需提供可聚焦语义与无障碍名称。