Version

2.6.11

Reproduction link

https://github.com/Xie-Jay/slot-issue

Steps to reproduce

I show issue by console.

What is expected?

All vnode can get componentInstance property.

What is actually happening?

ComponentInstance property is undefined when using the v-slot directive, but others not.

<slot-test>
  <component-test slot="default" name="slot1"></component-test>
</slot-test>
<slot-test>
  <template slot="default">
    <component-test name="slot2"></component-test>
  </template>
</slot-test>
<slot-test>
  <template v-slot:default>
    <component-test name="slot3"></component-test>
  </template>
</slot-test>

When I use v-slot to replace slot, I get this diffrence which really confuse me.