Firefox Community Forum

I'm not sure when it started happening, but whenever I'm watching something full screen, or just full screening, Firefox on Mac, there's this thin white line at the top of the window that's very distracting. Has this been happening to anyone else and does anyone else know how to get rid of it?

The taskbar (the one with the Start menu) doesn't hide when watching videos in fullscreen mode. This happens on YouTube as well as on any other website. The problem disappears if I run the browser in Safe Mode. It's only Firefox that doesn't work — in Chrome the taskbar does disappear.

не скрывается панель задач(панель с меню пуск) при просмотре видео в полноэкранном режиме. не работает как на ютубе так и на любом другом сайте. проблема исчезает если запускать браузер в безопасном режиме. не работает только firefox в chrome панель задач пропадает

When I pull up videos, some of them run fine while the majority will stutter heavily. I'm not sure if they're av1 encoded but I tried the same videos with helium browser and chromium and they do not have this issue. I have "Use hardware acceleration when available" turned on and I use a 7800x3d cpu, rtx 5080, 64gb of ram, and 2tb of storage on an nvme m.2 drive. If anyone can find a fix for this it would be greatly appreciated.

Hello, this is the basic problem:

The short version is that there is a problem with Firefox not interacting with the scrub bar and volume bar. (all other controls work fine) We know it's a Firefox thing because everything works with Brave. (or an interaction between Firefox and the OS at least, Firefox is heavily involved)

There is more detail and we have done some work on it here: CashyOS forum post

You can use the Firefox manifesto V0.2. video for an example, as it displays all the above problems for me.

I can get you guys whatever other data might be needed, but I kinda need an idea where to look to try and fix this, as all the other posts I have managed to find don't seem to have similar enough issues to work.

Los videos de YouTube se reproducen entrecortados y se detienen constantemente. El problema ocurre durante la reproducción de los videos, aunque la conexión a Internet parece funcionar con normalidad. Esto dificulta ver los videos de manera continua. Agradecería su ayuda para identificar la causa del problema y saber qué pasos puedo seguir para solucionarlo.

Постоянное отображение панели задач (до тех пор, пока не нажму на иконку браузера на панели дважды. Повторяется с каждым заходом в режим "на весь экран" ), при просмотре видео, в браузере, в формате "на весь экран" с версии 156.0. в других браузерах подобной проблемы нет, только в Firefox. Прикладываю скрин визуального отображения проблемы. С настройками самой панели задач проблем нет, перепроверял.

I am trying enable autoplay for website https://www.citiprogram.org and cannot find a way despite instructions.