Copied to staging, deactivated all other plugins and forums etc reappeared. Reactivated all plugins and forums etc. stayed up. So, some sort of custom post type prioritization issue? In any case this fixed problem, unfortunately I don’t know which plugin was the culprit.
On a separate issue, I do notice the the topic counts don’t reset when topics are deleted.
I would agree I have it installed (from previous wp version) and now ‘forums’, ‘topics’ and ‘replies’ are missing from dashboard sidebar.
wp 4.6.1
bbpress 2.5.10
OK, found the ‘Allow forum wide search’ setting. It appears when my theme is activated this box refuses to remain checked when saving forum settings. Following up with theme developer. If anyone has any thoughts I’d be interested to hear.
Theme is JumpStart