Maybe this is the problem? They say that setting widget.prefer_windows_on_current_virtual_desktop to false in about:config restores old behavior. But I didn't succeed in this endeavor yet.https://bugzilla.mozilla.org/show_bug.cgi?id=1994825
Windows 10 user here. Seems that several weeks ago this somehow broke my user experience too.I've installed "Single Window Mode" to not spawn new windows every time I open the link somewhere, but it irritates me that Firefox window is now travelling ...