fallback slot content not rendered in nested component with slot #2461
Description
Version
3.0.2
Reproduction link
https://codesandbox.io/s/vue3-nested-slot-fallback-bug-7n86x
Steps to reproduce
follow the link
In vue2 it works
https://codesandbox.io/s/vue2-nested-slot-fallback-bug-sn4pn
What is expected?
fallback content of inner is shown
What is actually happening?
not displayed