If you downloaded DisplayFusion 12.0 and are having issues with languages please re-download and re-install. We have repacked the release as 12.0c with the languages fixed.
Firefox ignores DF taskbar when opening context menu. DF taskbar is on top on second display under main display. This leads to context menu being open under DF taskbar. See attached screenshot. Not sure if other applications have same behaviour.
Is there any way to change this using compatability for application in DF maybe?