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.
That looks like a Windows taskbar, not a DisplayFusion taskbar. If you exit DisplayFusion does the issue persist?
You are correct, the issue is still there when I exit the DisplayFusion. So, I need to look at this error independently. Thanks for your quick and professional response.