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

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

MacOS High Sierra - Fullscreen problem

  • 3 respostas
  • 1 has this problem
  • 22 views
  • Last reply by philipp

nwseefeldt
nwseefeldt
more options

After my recent update on my Mac, Firefox doesn't work with fullscreen video.* This applies to websites like YouTube, Netflix, or other video based websites. I can enter fullscreen video, but on my Mac it doesn't fill the entire screen.

  • I am not talking about fullscreen for the Firefox window (that works fine), I am talking about specifically fullscreen video watching.
After my recent update on my Mac, Firefox doesn't work with fullscreen video.* This applies to websites like YouTube, Netflix, or other video based websites. I can enter fullscreen video, but on my Mac it doesn't fill the entire screen. *I am not talking about fullscreen for the Firefox window (that works fine), I am talking about specifically fullscreen video watching.

All Replies (3)

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

That is an issue on Mac where Full Screen mode is behaving differently.

In Firefox 56 you can still use this Legacy extension, but Firefox 57+ only suports WebExtension and no longer legacy extensions.

nwseefeldt
nwseefeldt Question owner
more options

That Old Lion add on still doesn't really fix the problem, is there another solution?

philipp
philipp
  • Moderator
more options

apple will fix this bug in high sierra in the upcoming 10.13.1 version of their os.