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There seem to be hidden tabs in the browser window

  • 4 replies
  • 1 has this problem
  • 9 views
  • Last reply by FfUser2018

FfUser2018
FfUser2018
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Hi everyone,

I use Firefox 59.0.2 on a PC with Windows 10 Home OS.

I tend not to close my browser windows for a very long time, I just open and close new tabs as required, I sometimes have lots of tabs open at the same time. Some of the tabs open at the moment have lot ads in them (stackoverflow, R-bloggers for example) and I don't use adblockers.

At the moment I have got 2 Firefox browser windows open. In one of them I have got 9 tabs. When attempt to close this window (by clicking the X button) the warning pops up: "You are about to close 9 tabs. Are you sure you want to continue?" So this is fine.

In the other window however (my main browser window) at the moment there are 8 open tabs. When I try to close this window, according to the warning: "You are about to close 70 tabs." Where do those extra 62 tabs come from??? Is it just a bug, where Firefox loses track of the number of the open tabs, or is it something more sinister?

Thank you for your help in advance.

Hi everyone, I use Firefox 59.0.2 on a PC with Windows 10 Home OS. I tend not to close my browser windows for a very long time, I just open and close new tabs as required, I sometimes have lots of tabs open at the same time. Some of the tabs open at the moment have lot ads in them (stackoverflow, R-bloggers for example) and I don't use adblockers. At the moment I have got 2 Firefox browser windows open. In one of them I have got 9 tabs. When attempt to close this window (by clicking the X button) the warning pops up: "You are about to close 9 tabs. Are you sure you want to continue?" So this is fine. In the other window however (my main browser window) at the moment there are 8 open tabs. When I try to close this window, according to the warning: "You are about to close 70 tabs." Where do those extra 62 tabs come from??? Is it just a bug, where Firefox loses track of the number of the open tabs, or is it something more sinister? Thank you for your help in advance.

All Replies (4)

TyDraniu
TyDraniu
  • Top 10 Contributor
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It may be the issue with TabGroups extension, or similar.

FfUser2018
FfUser2018 Question owner
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I used to have the TabGroups extension. After reading your comment I checked my extensions, and TabGroups was still there, as a disabled legacy extension. I removed it, closed both browser windows, then started Firefox again, and restored both windows. The problem unfortunately still persists.

TyDraniu
TyDraniu
  • Top 10 Contributor
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Try to install the extension again (enabled), and check if there any created tab groups.

FfUser2018
FfUser2018 Question owner
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I don't think I can. I had not disabled TabGroups myself. Firefox turned it off, when I upgraded to Firefox Quantum, because apparently it is incompatible with it. I tried to search for it on the Firefox addons site, to reinstall it, but I can't even find it anymore.