Translation of this issue:

Environment

Win10/chrome70/2.6.9

Reproduction link

https://run.iviewui.com/3SVm7EEM

Steps to reproduce

1. V-IF renders a Modal and uses watch to observe whether it is rendered or not.
2. Click the button to display the cartridge; click the "OK" button to hide the cartridge;
3. Click the "OK" button again, and you can't bounce the box again.

What is expected?

1. After closing the cartridge frame, the HTML related to the cartridge frame is not rendered (at present, garbage collection BUG will cause memory leak);
2. Click the button again to bounce the box.

What is actually happening?

1. After closing the bullet-box, the memory of HTML pages is not recycled.
2. Can't bounce again

Possibly related to the v-transfer-dom instruction

m改成{}

请问下是基于什么原因把 modal设计为不支持v-if的。为什么要设计成永久组件，而不可以用v-if设置为实时渲染的组件。

同问，如果在modal使用v-if，初次渲染时动画也会随之消失，modal直接渲染完成，没有了原先的过度动画