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When working in a tab, a second window will open, but only occasionally, why?

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  • Last reply by cor-el

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I have a window open with 3 tabs, I start working in one of the tabs and the tab I am working in opens in a NEW window, and a second tab opens with it. It only does it occasionally, but it annoys me that I can't figure out why?

I have a window open with 3 tabs, I start working in one of the tabs and the tab I am working in opens in a NEW window, and a second tab opens with it. It only does it occasionally, but it annoys me that I can't figure out why?

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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): 11*https://addons.mozilla.org/firefox/addon/bug489729-disable-detach-and-t