Trigger组件导致内存泄漏

[Reson-a]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.4.8

Environment

Vue 2.6.1 chrome 78

Reproduction link

Steps to reproduce

任何带有trigger的组件渲染执行时
如示例 点击 按钮几百次后

What is expected?

内存占用不变

What is actually happening?

出现内存泄漏，渲染创建的节点VNode没有被正确回收 ，大型应用长时间使用会造成卡顿

这里有个闭包

[github-actions]

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