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src/views/Stage.vue

@@ -529,7 +529,11 @@ onMounted(async () => {
   el.appendChild(app.view as unknown as HTMLCanvasElement)
   stageResizeObserver = new ResizeObserver(() => {
     if (!app) return
-    app.renderer.resize(Math.max(1, el.clientWidth), Math.max(1, el.clientHeight))
+    const previousHeight = app.screen.height
+    const nextHeight = Math.max(1, el.clientHeight)
+    // Stage 高度变化时补偿视图中心，避免底部面板折叠导致画布内容整体跳动。
+    if (Math.abs(nextHeight - previousHeight) > 0.5) store.editor.viewY -= (nextHeight - previousHeight) / 2
+    app.renderer.resize(Math.max(1, el.clientWidth), nextHeight)
   })
   stageResizeObserver.observe(el)
   createLayers()