Thanks for checking into it.
I only had bbPress installed and activated. I’ve switched to various themes including Twenty Twenty. I ran the Health and Troubleshooting, but everything seems fine. I also set up a local installation with the same result. There are no error logs either.
Not sure what could cause it if it’s only happening to me. The issue does not happen if the category and sub-forums are public.
Here you go:
Screenshot of forum index
Screenshot of forum index after I made a topic in Sub-Forum 1
Thank you 🙂 I’ll look into and give bbPress a proper try.