User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0

Steps to reproduce:

Unsure.

Actual results:

Just stopped working after dragging a tab to open a new window by accident. After trying to drag the tab back into the original window, I noticed it not working. Then I opened a new tab which is unable to be moved about at all - not into a new window nor within the current window.

Expected results:

A new window should open when a tab is dragged outside of Firefox, or rearranged corresponding to the position it was dropped.

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Thanks for the report!