topic Reopening a tab you closed by accident in Discussions

Reopening a tab you closed by accident

metroart — Thu, 22 Oct 2026 17:22:38 GMT

I'm using Firefox Version 158.0 on Win 11 -- with vertical tabs on the left side of the screen -- and I keep clicking by accident on the X at the upper left of the tab circle. And then I can't reopen the **bleep** tab.

It's driving me nuts. There has to be a fix. How about adding a simple setting to require a double-click to close the tab instead of a single click?

Or am I the only one experiencing this problem?

Re: Reopening a tab you closed by accident

dftf — Thu, 22 Oct 2026 18:21:54 GMT

@metroart : I use horizontal tabs, but if you close a tab there you can do the following:
• right-click any other tab, and choose "Reopen closed tab"
• use the keyboard shortcut CONTROL + SHIFT + T (CMD + SHIFT + T if you're on a Mac)

I should think they should work too for vertical tabs?

You can allow double-clicks to close tabs, if you want:
• in the URL bar, type about:config then press ENTER
• accept any warning, if shown, and continue
• search for browser.tabs.closeTabByDblclick and change it to "true"

Though that setting then just means "a double-click can also be used to close a tab", not
"a double-click is required to close tabs", which is what you're after.

There is a way to hide the X entirely on tabs, but it involves creating a file called "userChrome.css",
so you may be best to ask an AI to assist you, or do a web-search for steps.

Re: Reopening a tab you closed by accident

metroart — Fri, 23 Oct 2026 08:23:08 GMT

Yes, CONTROL + SHIFT + T does the trick. No need to change a config file. Or create a .css.

Thanks.