From f96109654292c6151da830b1cacd3a62490e71fe Mon Sep 17 00:00:00 2001
From: "shuaige.zsg" <shuaige.zsg@alibaba-inc.com>
Date: Mon, 11 May 2020 17:24:47 +0800
Subject: [PATCH] fix: cancel dragging on invalid position

---
 packages/designer/src/designer/designer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/designer/src/designer/designer.ts b/packages/designer/src/designer/designer.ts
index 7bee2289b..066e2a481 100644
--- a/packages/designer/src/designer/designer.ts
+++ b/packages/designer/src/designer/designer.ts
@@ -99,7 +99,7 @@ export class Designer {
       const { dragObject, copy } = e;
       const loc = this._dropLocation;
       if (loc) {
-        if (isLocationChildrenDetail(loc.detail)) {
+        if (isLocationChildrenDetail(loc.detail) && loc.detail.valid !== false) {
           let nodes: Node[] | undefined;
           if (isDragNodeObject(dragObject)) {
             nodes = insertChildren(loc.target, dragObject.nodes, loc.detail.index, copy);