Really. Ain't nobody drag and drop tabs to their task bar??

Still no, eh, fools?

Let me see whether I understand:

• You want to drag one or more tabs from the tab bar of Firefox maximized window "A" to Firefox maximized window "B".
• You start the drag, and in order to make Firefox window "B" active, you hover over the Windows Taskbar icon until the thumbnails show.
• You then hover the thumbnail but the process breaks down here because Firefox doesn't activate that window to let you move the tab onto its tab bar.

I see that, too. Did this work before?

Yes. Until a few months ago, this feature existed. I would highlight a bunch of tabs in a window, grab and drag them to a browser window button on the task bar, that browser window would come to the front, and I would place them in line with the other tab(s).

You could file a bug report: https://bugzilla.mozilla.org/

I have to create an account for that. I'm fuckin logged in here. To-tally gay.