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!

Avatar for Username

Søg i 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.

Læs mere

Denne tråd blev arkiveret. Stil et nyt spørgsmål, hvis du har brug for hjælp.

My active tab (in tab bar) displays incorrectly

Richard Johnson
Richard Johnson
more options

The tab bar should distinguish the active tab (in part) by removing its bottom border. When I restart Firefox, the tab bar displays correctly but before long that bottom border of the active tab reappears. Changing to a different theme doesn't help. All I can think of is that perhaps I have too many add-ons or bookmarks installed. (I currently have just under 50 add-ons.) What can I do to keep that bottom border off the active tab?

The tab bar should distinguish the active tab (in part) by removing its bottom border. When I restart Firefox, the tab bar displays correctly but before long that bottom border of the active tab reappears. Changing to a different theme doesn't help. All I can think of is that perhaps I have too many add-ons or bookmarks installed. (I currently have just under 50 add-ons.) What can I do to keep that bottom border off the active tab?

Alle svar (4)

TyDraniu
TyDraniu
  • Top 10 Contributor
more options

Can you provide a screenshot of this issue? Thanks.

Richard Johnson
Richard Johnson Spørgsmålsstiller
more options

Thanks, Ty, for your interest. In the screenshot, the Wikipedia tab is the active or selected one--and it's supposed to be distinguished by the absence of the bottom border, which, as you'll see, is not absent.

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

Are you using a userChrome.css file to style the Firefox user interface ?

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window
Richard Johnson
Richard Johnson Spørgsmålsstiller
more options

Thanks, cor-el. I always appreciate you helpful replies.

I gather your first step would be to test the issue in safe mode. There are two problems with that. (1) This issue does not kick in immediately upon restart. The issue does not appear for a while (hours or more). (2) If the default theme is "Default Theme (Black Background)," it seems that theme does not have the bottom border on any tabs.

(I do use userChrome.css, but I'm not aware that it has affected my tab bar tabs.)