[Q] Right mouse click as 'back' on JB?

Hello,
I just flash 'hei1125's UNOFFICIAL CM10 BUILD' (http://forum.xda-developers.com/show....php?t=2041646) (4.1.2) and usb mouse - right mouse button stop working as a 'back' button.

On GB or ICS - always right mouse button works as back button (escape button).
Is there is a fix for this?
Thanks!