(Cleaning up old posts - deleted)
Ok, so I was actually rearranging some of the names and the moment I did that for one of the ‘hidden’ groups, it popped up in the time. Solved, I guess? But leaving it up in case anyone else has this bug.
I’m glad you were able to get the groups displaying again, we aren’t sure what could have caused this issue to appear.
If it happens again, let us know and and if you can, email your timeline file to support@timeline.app
This will help us replicate the problem and work out what is causing it.