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everytime i click fullscreen mode on YouTube in firefox mobile browser the app closes.

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I have an android phone and I watch youtube on firefox. When i enter fullscreen mode, the app exits to my homescreen, then when i click on it again and enter fullscreen again, it works. How do i fix this?

I have an android phone and I watch youtube on firefox. When i enter fullscreen mode, the app exits to my homescreen, then when i click on it again and enter fullscreen again, it works. How do i fix this?