I’m running version 2.8.5 (61cf791929) and the forum is completely busted. Clicking on a “New Topic” for example causes it to freeze up. It’s much worse on mobile but even on the Desktop clicking on “New Topic” just ignores the user
It mentions discourse locations in the screenshot. Perhaps that could be the problem plugin? If you try safe mode with unofficial plugins disabled that could help narrow it down. If so, you could you try removing that from your app.yml and rebuilding.