Describe the bug
When a process contains at least one comment, deleting the process results in a FetchNotFoundException. (Checking the system afterwards, the process seems to be deleted, though)

To Reproduce
Steps to reproduce the behavior:

1. Add a comment to a process
2. Try to delete the process
3. See error

Expected behavior
It should be possible to delete processes that contain comments without error

Screenshots

Release
main branch

Additional context
Caused by HibernateSearch integration; does not occur in commits before #6504