Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

tab close buttons disappear when URL launched from another app

  • 2 replies
  • 3 have this problem
  • 10 views
  • Last reply by TomBates

TomBates
TomBates
more options

When a new tab is opened via launching a URL from another application on Windows (e.g. Outlook), the tab close buttons disappear, even with only two tabs. By carefully grabbing the right window border and dragging *inwards* (i.e. making the window narrower), the buttons suddenly appear on all tabs, thus illustrating that it's not a problem with the tab widths.

When a new tab is opened via launching a URL from another application on Windows (e.g. Outlook), the tab close buttons disappear, even with only two tabs. By carefully grabbing the right window border and dragging *inwards* (i.e. making the window narrower), the buttons suddenly appear on all tabs, thus illustrating that it's not a problem with the tab widths.

Chosen solution

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

Read this answer in context 👍 1

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Chosen Solution

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

TomBates
TomBates Question owner
more options

Now I know about Safe Mode! The culprit turns out to be the add-on ColorfulTabs 4.8.1.6.2.1.

Thanks for the help!