Firefox for Android Community Forum

When I am using the android Firefox browser to watch YouTube, it is fine when browsing and finding a video. I will click on a video just fine, and start watching it no problem. The issue occurs when I switch tabs or switch apps to do something else and return later. Once I return to the YouTube tab even if the video is not or was never in full screen, Firefox will then be forced into landscape orientation. This persists between tabs until I either restart the app or do a Google search.

I found a potential solution in these forums. In about:config there should be a setting called media.videocontrols.lock-video-orientation. I tried this, but there is no such setting there for me. I'm at a loss for what to do now.

I've started watching YouTube through my browser and I've begun to notice that it'll automatically change the settings on the site to block autoplay of audio and video, which stops background play.

I have the setting set to allow autoplay audio and video.

I notice it when I switch from the tab and it'll stop playing so I go to the page specific settings and it's switched to block.

How are they doing this? And what can I do to stop it from doing this?