We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

what does the blue line under facebook tab mean?

  • 2 replies
  • 1 has this problem
  • 17 views
  • Last reply by firefoxnoo

more options

I understand the blue line above the current tab to indicate that it is currently active but specifically facebook it will have a blue line underneath the tab name and when using it both the line i am describing and the active blue line on top

I understand the blue line above the current tab to indicate that it is currently active but specifically facebook it will have a blue line underneath the tab name and when using it both the line i am describing and the active blue line on top

Chosen solution

All Replies (2)

more options

Chosen Solution

This is probably the Facebook containers add-on. https://addons.mozilla.org/en-US/firefox/addon/facebook-container/

more options

Moses said

This is probably the Facebook containers add-on. https://addons.mozilla.org/en-US/firefox/addon/facebook-container/

thanks! i forgot i had installed it