Clicking RMB to turn camera causing this problem from time to time. No idea why but this is what it does. I would also point that RMB function is quite useless unless you're doing a thing from zero
RMB to turn the camera on version 1.3.0.2 consistently brings up a context menu which makes the workflow of doing literally anything extremely annoying.
I think I made it so the context menu was right click and it was cntl right click to camera control. I cannot remember. Either way it's an issue, will investigate.