In Kirby 3.5.2 it states:
Fixes
List items no longer contain p-tags in list blocks and the list field
I’m using 3.5.3.1
They still seem to haunt me:
That fix had to be reverted: Reverts removing `p` tags changes #3168 by afbora · Pull Request #3173 · getkirby/kirby · GitHub
I hope we’ll fix again this issue on 3.5.4, the PR is not approved yet.