After upgrading to Windows 11, I installed Start11 to be able to move the taskbar to the top of both my monitors. The problem is that windows kept falling behind DisplayFusion's taskbar and could only be "fixed" by restarting Explorer after moving all windows to the monitor with the Windows taskbar and then minimizing them.

My arrangement:
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I've completely solved my issue by changing the following:
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I know it seems counterintuitive, but for whatever reason the DisplayFusion taskbar has the proper space reserved for it by setting the Start11 for to the opposite of where the DisplayFusion taskbar is located. In my case, I had to set it to since I have the DisplayFusion taskbar at the top. I also tested to see if the same behavior applies if both taskbars are at the bottom and it worked just as well— if you keep both taskbars at the bottom, then set the DisplayFusion taskbar position to and set the Start11 for to . You'll have to restart Explorer one more time. Ever since I discovered this a week ago, I've turned off/on both monitors each day, rebooted my computer each day, and not once has a single window fallen behind the DisplayFusion taskbar!

Thnx. Has this issue been fixed without your workaround?
Unfortunately it doesn't work for me since I really want the DF taskbar to be at the bottom as well (same as the windows one). But thanks for sharing

No, it still needs the work around. But like I said in my most recent comment, the work around should still work if you want your taskbars at the bottom.