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.
Beta 4 mentions that hotkeys should work correctly with RDP windows. Should the hotkeys work with full screen RDP windows too? Hotkeys work for me EXCEPT when I have full screen RDP windows. My environment is Windows 7 Enterprise 64-bit with DisplayFusion 3.1.8.106.