Dragging and dropping tabs between windows or even in the same window in firefox does nothing

[tastyratz]

Tried installing this extension with firefox tonight. Clicking and dragging tabs between windows in firefox and nothing happened. I also attempted to drag and reorder within the same window to the same (non) result.

FF 83 on Windows 10 20H2

[onaralili]

I tested it (within the same window) with Firefox Developer Edition v84, and it works. Maybe someone else could also test it.