Reply To: Topic not showing: Conflict with The Events Calendar
My observations so far by testing on the Stage site.
1 – Deactivating The Calendar fixes the problem with the Forum
2 – Downgrading The Calendar to 5.16.4 fixes the problem
3 – Changing Themes to Twenty-Twenty-One has the same problem
4 – Changing Themes to Roseta (we are using a child of Roseta) or Codex does not help
5 – Changing Themes to Twenty-Twenty-Two or Twenty-Twenty-Three gives me blank pages on the forum (worse) even with all plugins deactivated.
6 – Deactivating all plugins except bbPress and The Calendar gives me the same problem
We are running PHP 8.1 and WP 6.1.1
All this (except observation 5) points to a conflict between The Calendar and bbPress.
If you want, I could give you access to the staging site.