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opening a tab into a new window by accident

  • 1 reply
  • 1 has this problem
  • Last reply by cor-el

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Hi there

since a few weeks it happens daily that by accident I transfer a tab into a new firefox window obviously by moving/clicking the mouse quickly in a way that leads to this new window. then I need to copy the email adress, close the new window and make in the original window again a new tab and paste it there and place it on the right spot. not really handy... not sure what changed in firefox since this did not happen in the past. did there change sth or how better said how can I avoid that this is happening, can I lock tabs that they will not get a new window. does someone know this problem? Thanks Andy

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Firefox has a 'tear-off' feature to move the tab to a new window by slightly dragging the tab down. In Firefox 74 and newer there is a pref on the about:config page to disable tear-off and prevent moving the file accidentally to a new window.

  • browser.tabs.allowTabDetach = false

There is still "Move Tab -> Move to New Window" in the Tab bar context menu to use this feature. You can drag the tab back to the Tab bar in the original window to undo the 'tear off'. Firefox will automatically close the window if this window is empty (no more tabs).

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".