Suspended component in nested route result in child route mounted twice

[wuhaodes]

Version

4.0.0

Reproduction link

codesandbox.io

• from keep-alive component in nested route result in child route mounted twice #626 (comment)

Steps to reproduce

https://codesandbox.io/s/lively-mountain-o395nx?file=/src/UserCenter/Push.vue

What is expected?

push once

What is actually happening?

push twice

[posva]

I tested with up-to-date dependencies and there is no longer a double push. This was patched in vuejs/core#10055