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.

ค้นหาฝ่ายสนับสนุน

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.

เรียนรู้เพิ่มเติม

Why does Firefox Mac in full screen on second monitor still have an empty bar along the top of the screen?

more options

In Mavericks when Firefox 28 or 29 is full screened on a secondary display, there's still an empty bar when the OS menubar auto-hides. Seems like this is a bug, no?

In Mavericks when Firefox 28 or 29 is full screened on a secondary display, there's still an empty bar when the OS menubar auto-hides. Seems like this is a bug, no?

การตอบกลับทั้งหมด (2)

more options

You can try to disable hardware acceleration in Firefox (you need to close and restart Firefox).

  • Firefox > Preferences > Advanced > General > Browsing: "Use hardware acceleration when available"
more options

No difference. I think it has more to do with Maverick's putting a menu bar on both screens and Firefox not handling it in all cases.