I believe the crash happens when I use button (at the bottom of Master 3) to switch from device 1 to device 3.
I do this a lot because there's no option to move from device 1 to 3 using screen border. And moving step by step from device 1 to 2 and then to 3 takes a lot of time.
So I always just fast click (2 times) on button at the bottom of the mouse. And it will crash the app along the way.