Windowed Fullscreen for Videos

doesn't work on youtube (vivaldi browser)

hi, i really like the idea of this extension but when i use it on youtube, it goes to windowed full screen but pauses the video. the video will only play for a single frame - if you click "play" fast enough it will very slowly progress - but it will immediately pause again as long as it's in windowed full screen. going back to normal lets the video continue playing