Firefox doesn't open correctly with Windows Virtual Desktops

Firefox doesn't open correctly with Windows Virtual Desktops. I use Windows Virtual Desktops a lot. Every app I use, except Firefox, opens on the desktop that has the focus when I open them up. With Firefox, if the current desktop isn't the one that Firefox was on the last time I used it and closed it, it opens up an instance with a single tab on the current desktop and another instance on the other desktop it was on when closed last with the tabs open from the prior session there. This is very awkward. Steps to Reproduce: 1. Enable Virtual Desktops on a Windows machine and create at least one additional one. 2. Switch to a second virtual desktop, open Firefox or move Firefox to that desktop. 3. Set Firefox to open tabs from the last session and open a few tabs to random sites. 4. Close Firefox. 5. Switch to the first virtual desktop. Open Firefox. Observe an instance on that desktop with one tab and another instance on the other desktop with the tabs from the prior session. Expected Result: Firefox should open on the virtual desktop that has the current focus like all other applications do. It is very awkward to close the unneeded instance on the current desktop, then open virtual desktop manager and move the originally desired instance to the originally desired desktop.