Component scoped styles are not applied to slot with v-for

[javifm86]

Version

3.0.2

Reproduction link

https://codesandbox.io/s/nostalgic-visvesvaraya-4l1vz?file=/src/App.vue

Steps to reproduce

Just open the link.

What is expected?

First and second tables should look the same.

What is actually happening?

Scoped styles are not applied in first table generated with v-for. Missing atributes with -s in order to get styles correctly. Second table is generated ok.

[HcySunYang]

Can be fixed in #3374, not released yet