I went into settings > forums, pressed the “save changes” button and the forums magically started working again.
There is something wrong with your update that messes settings.
Bump, this is ridiculous.
Nope. I just tried with short codes and still shows no forums/threads.
I got the update and updated, but this did nothing, still no threads being displayed.
I looked at my local dev version of my website, and just updated the plugins without updating to wordpress 5.3 and it broke, so its actually the BBPress plugin itself updating that broke itself?
Figured it out, its wp ulike plugin breaking all Buddypress notification titles.