I'm back with some updates on this bug:
* I can confirm that it is not caused by being around a moving lift and not moving the camera too much. In the last week, I would have just been walking towards a building entrance and it would have happened.
* I can also confirm that it is definitely a macOS-exclusive bug. I have not seen it happen at all on Windows or Ubuntu, but I am still going to continue using macOS thanks to its reliability.
* It happens more regularly on Beno Building Creator buildings than hand-coded ones.
* When it happens, it seems to mess up the camera coordinates on the Simulator Control Panel. Two values in CameraRotation can disappear and the CameraPosition can just get set to a mad number.
* I'm starting to think that it might be to do with my computer storage or the amount of buildings and data that I have. I have over 2000 buildings and over 3000 pieces of data at this time. This might be the most likely cause, because when I first got Skyscrapersim on this computer, it worked perfectly. When I got G1DP and the EG881, KW and June IPs, it happened intermittently but not too commonly. I then had a clean sweep where it didn't happen for a LONG time, even though I did nothing to my buildings folder, but then I ran a custom building on Random Activity and it happened. Now, 1 in 2 buildings I load will have this happen to them.
-SL2844