Messages

I've tried remapping the UI but it still does it... 

This seems to be happening more and more often.  Everything is playing fine and then without hitting ESC my menu opens up. I'm then able to open and close the menu anytime I press a button on my controller. The only way to get it to stop is if I ALT Tab out and click something on my desktop, but usually, it will start doing it again within a few minutes. Does anyone know how to fix this bug?