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.
I have been having this problem with Windows 7 & Windows 10 for some time now.
Sometimes I have the tendencies to watch videos on my second monitor while I work on another window on the main monitor.
I do this with YouTube videos or normal videos opened in BSPlayer. I make the videos fullscreen then I'm going back to my main window in my main monitor.
The problem is that as soon as the video window (BSplayer, youtube (browser)) is out of focus the second monitor taskbar gets over the video.
Here is a screenshot:
http://puu.sh/jyDOF/b7d8cc3f69.jpg
You can see how the taskbar get's over the youtube control videos.
On the Settings > Taskbar tab, disable the "Show taskbar in front of full screen applications when they lose focus" option, and that should fix this up
