When I have Edge split out into two Windows, and I click the DF Taskbar button for Edge on the secondary monitor, it will bring up an Edge window if it isn't currently visible, another click will switch to the other Edge window, then it stops working. Clicking again will no longer switch Edge windows. If the secondary Edge window comes up first, even the first click won't switch to other window. I can switch the windows by using Preview.

Windows 10 22H2 19045.5737, DF Pro 11.2 Beta 5