Since 10.1 my mouse seems to keep locking up where I am unable to turn my camera with the mouse. This sometimes happens when try to interact with an item that is not in range though there are other reasons this may be caused by fullscreen windowed mode being bugged as this was happening to me last week though I was able to fix it by pressing the windows key and right clicking my other screen and then tab back into the game though I haven’t been able to do that since the season started the only way I’ve been able to fix it now is by restarting wow, I’ve also had this happen to me during m+ and this it might of been caused by trying to attack a enemy out of range it is either a issue with windowed mode or interacting with something out of range or a combination of both.
This could all be incorrect though it has been my observation over the past week or so playing the game but hopefully this helps in anyway to fix the problem.
Sny.