<!-- #### Video doesn't play? In most cases, this is because of your browser. The app uses HTML5 video playback. That means it can only play formats supported by your browser: https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats#Browser_compatibility Please test this by dragging the video file into an empty tab. There's only a problem with the app if the video is working in the browser, but not in the player. When you open an issue, please supply a video that doesn't work or exact information on the codecs used. --> ### Expected behaviour When I enabled fullscreen mode video should be stretched. ### Actual behaviour The video on the first screen works correctly.  but on fullscreen looks like this  ### Variables 1. Browser version Mozilla Firefox 87.0 (64 bit) on windows 10 20h20 19042.867 Education 2. Arch Linux Firefox version 86.0.1 (64 bit) problem is the same.
Expected behaviour
When I enabled fullscreen mode video should be stretched.
Actual behaviour
The video on the first screen works correctly.
but on fullscreen looks like this
Variables