diff --git a/packages/editor-skeleton/src/layouts/left-float-pane.tsx b/packages/editor-skeleton/src/layouts/left-float-pane.tsx
index aa8bd7e27..dbfd07e3b 100644
--- a/packages/editor-skeleton/src/layouts/left-float-pane.tsx
+++ b/packages/editor-skeleton/src/layouts/left-float-pane.tsx
@@ -16,6 +16,8 @@ export default class LeftFloatPane extends Component<{ area: Area<any, Panel> }>
     const { area } = this.props;
     const triggerClose = (e: any) => {
       if (!area.visible) return;
+      // 当 MouseEvent 的 target 为「插入占位符」时，不关闭当前 panel
+      if (e.originalEvent?.target?.classList.contains('insertion')) return;
       // 假如当前操作 target 祖先节点中有属性 data-keep-visible-while-dragging="true" 代表该 target 所属 panel
       // 不希望 target 在 panel 范围内拖拽时关闭 panel
       const panelElem = e.originalEvent?.target.closest('div[data-keep-visible-while-dragging="true"]');