fix(patch): Deep clone vnode when used in previous render

Hiroki Osame · Hiroki Osame · commit 14133787d429 · 2018-08-09T19:53:25.000+01:00
fix vuejs#8337
diff --git a/src/core/vdom/patch.js b/src/core/vdom/patch.js
@@ -138,6 +138,9 @@ export function createPatchFunction (backend) {
       // reference node. Instead, we clone the node on-demand before creating
       // associated DOM element for it.
       vnode = ownerArray[index] = cloneVNode(vnode)
+      if (vnode.children) {
+        vnode.children = vnode.children.map(cloneVNode)
+      }
     }
 
     vnode.isRootInsert = !nested // for transition enter check

Original file line number	Diff line number	Diff line change
`@@ -138,6 +138,9 @@ export function createPatchFunction (backend) {`
`138`	`138`	`// reference node. Instead, we clone the node on-demand before creating`
`139`	`139`	`// associated DOM element for it.`
`140`	`140`	`vnode = ownerArray[index] = cloneVNode(vnode)`
	`141`	`+ if (vnode.children) {`
	`142`	`+ vnode.children = vnode.children.map(cloneVNode)`
	`143`	`+ }`
`141`	`144`	`}`
`142`	`145`
`143`	`146`	`vnode.isRootInsert = !nested // for transition enter check`