Absolutely don’t mean to “pile on” but one more datapoint. I’ve been experiencing the same problem when trying to use the “Forum Jump” link at the bottom of a Forum or thread page (from 6-8 different forums and threads). Have been able to change forums by clicking on “Forums” at the top of the page and then (sometimes "All Forums") and then clicking on the individual Forum on the left side of the page.

As per the “How to Report an Issue” Sticky:
Only on desktop PC, not on iPad, occurs when logged in or not logged in.
Chrome and Edge.
Chrome Incognito Mode, logged in or not logged in, did not solve the problem.
About a week.