Dual Screen bug

[bigfella67]

I run dual screen monitors, with fullscreen option set so for the most part my mouse is stuck in the game window, but regularly I seem to be able to move my mouse outside of the game window to the second monitor.  

 

It messes with combos, accuracy, and forces a switch in active windows.  Any way to stop this?  On Windows 10.

[Eliteneet]

I'm having the same exact problem, I used to have this problem in Skyrim as well.

The only fix for that game was to use another program to keep the mouse constrained to the main monitor. I have not tried that app with this game yet however.