This is a Windows 10 bug caused by any program that sets windows as "topmost," as we have to do for certain features like our taskbars and Titlebar Buttons. We're at the mercy of Microsoft fixing the underlying issue, but there are a couple of workarounds at the moment. Either one should resolve the issue:

• Set all taskbars to the bottom position
• Enable the Advanced Setting shown in the attached screenshot and restart DisplayFusion (this Advanced Setting is only available in the latest DisplayFusion 8.0 Beta versions, available here: https://www.displayfusion.com/Download/Beta)

Thanks!

Excellent, glad to hear it!