Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

New Tabs Randomly Moved To New Window, Why?


Upon opening a new tab it will sometimes get moved to a new window. Just now as a matter of fact I was opening 4 new tabs in succession. When I opened the final fourth one I clicked back to the main tab (#5) & immediately all following tabs were moved to a new window. Why does this sometimes happen & is any 1 else having the same problem???

Additional System Details

This happened

A few times a week

This started when...

When I open a new tab (sometimes).

Installed Plug-ins

  • Shockwave Flash 10.3 r183
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Next Generation Java Plug-in 1.6.0_26 for Mozilla browsers
  • 4.0.60531.0
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.0


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0.1) Gecko/20100101 Firefox/5.0.1

More Information

It doesn't matter how many new tabs were opened, it can occur after 1 or more. Whatever is happening here doesn't seem to be effecting my Firefox's performance. It's purely just an annoyance & I'd like to at least know that I'm not the only 1 with this problem.

Matt Brubeck 147 solutions 1390 answers

If you drag a tab away from the tab bar, it will "tear off" and become a new window. Could it be that you are accidentally the dragging the tab slightly when you click on it?

  • Top 10 Contributor
  • Moderator
10738 solutions 96644 answers

Helpful Reply

bug489729 (Disable detach and tear off tab):

Question owner

How do I disable tab tear off?

  • Top 10 Contributor
  • Moderator
3195 solutions 24387 answers

Install the add-on which cor-el hyperlinked.

wolfeyes 0 solutions 1 answers

Okay, so how do you get the dang window BACK to the tab position??

  • Top 10 Contributor
  • Moderator
10738 solutions 96644 answers

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.