Browser windows always on top of other open windows

[Nisko]

When I use Firefox, it is ALWAYS on top of other open windows. I can still drag the other windows with the mouse - but they remain under the Firefox window.

 

[MilesAhead]

Topmost Toggle may fix it while FF is running. I don't know why it would be set on top. You might ask on Mozilla forums if there's a setting or even a hidden or undocumented setting that somehow is being enabled.

 

[A Guy]

Start FF in safe mode and see if problem persists

Open FF> Help> Restart with Add-ons Disabled

If it behaves normally now, you can troubleshoot to see which addon is causing the behavior.

https://support.mozilla.org/en-US/kb/troubleshoot-issues-with-plugins-fix-problems

You can also confirm the priority of the firefox.exe in task manager

Open Task Manager (Ctrl+Shift+Esc)> Processes tab> Right click firefox.exe> Set Priority> Confirm it is set to Normal If not select Normal, and try it again)

A Guy