I've got a very similar - maybe the same cause - bug. It's with incidents too (and raids) but only 2 of my game restarts after this bug I closed the app. this has happened 5 times now during incidents/raids at random, can't spot a pattern other than it happens during them but no other time. Either unwinnable raid that goes on forever or a fire that can never be put out. Can't build etc, only difference being resources/money has continued in the most recent one but not in the other 4 times it has happened. Quite irritating as lost a bunch of lunchboxes etc that hadn't used after buying em and was 1 dweller away from 100 on this last game