by touching a tab with the mouse pointer it moved from the tab into a new firefox window.The existing tab has gone.So I need to reload it in the original firefox alongside my other tabs. To the best of my knowledge I have not downloaded any new addon. Using firefox 19
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philipp 5 years ago hello, can you try to replicate this behaviour when you launch firefox in safe mode once?
Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems
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mgzteed 5 years ago Yes have no problem replicating it in safe mode. There seems to be some correlation with how long one presses the mouse button whilst its ocused on the tab . Weird and annoying
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cor-el 5 years ago Current Firefox versions have a feature called tear-off tabs.
You can detach a tab from the current window and open it in a new window by dragging a tab in the browser window.
You can drag that tab back to the tab bar in the original window to undo that detaching.bug489729 (Disable detach and tear off tab):