I can’t quite figure out the exact pattern, but it seems as though B3 sometimes can’t handle the load of having multiple (large?) projects open at the same time, possibly over a long period of time. At some points, B3 just stops working. It might start like I can’t “save as” a project (Bug: Sometimes Cannot Save Mockup), it might be that saving alone freezes, or it might be that something else stops working (like exporting to PDF freezes).
Sometimes force-quitting the app works, but the situation I’m in now is that I’ve force quit that app and it won’t re-open (I click the app icon, I get a spinny for a moment,and then nothing more happens). This happened yesterday too and only a reboot fixed the problem such that I could open B3 again.
If there’s anything I can do to further help debug this sporadic problem, let me know!