Just installed DF Pro 9.6.1 (latest version) on my Win 10 laptop, on which I'm running laptop screen + 1 external monitor. I have created monitor splits on both screens and they are not being respected. When I drag a maximized window from one screen to the other, DF usually shows me the splits on the monitor I'm dragging to. But on this setup, DF shows me the entire screen as the split - in other words, when dragging a window to the other monitor instead of seeing the split as '2.1', '2.2', etc., I see '2'.

I've been using DF for years, and have never run across this issue before.

Suggestions?

Keith, debug file attached.

Thanks Keith, that did it.