onUnmounted hook not called for components if their parent has been removed

[danyadev]

Version

3.0.0-beta.10

Reproduction link

https://jsfiddle.net/danyadev/34xz5khf/2/

Steps to reproduce

check reproduce link and open the console

What is expected?

two console messages about calling onUnmounted hook for children

What is actually happening?

one console message and “invisible” removal of the parent with the child