Recent answers to Why is Firefox always displayed when using Windows 10 multiple desktops?https://support.mozilla.org/ga-IE/questions/13313272021-06-07T01:32:11-07:00I found the answer to this eventually:
Win+Tab to open Task View
Right click on Firefox
Uncheck 2021-06-07T01:32:11-07:00ian119https://support.mozilla.org/ga-IE/questions/1331327#answer-1419108<p>I found the answer to this eventually:
</p>
<ul><li> Win+Tab to open Task View
</li><li> Right click on Firefox
</li><li> Uncheck "Show this window on all desktops"
</li></ul>