They are different issues: Windows and Mac OS users using 21:9 monitors will have aspect ratio / black bars problems, Linux users with standard 16:9, 16:10 monitors will have problems with full hd and 4k resolutions. And even if these are two small user bases please consider the efforts required in order to fix the problems we are talking about. What could possibly take to lift the block on full hd as I am already doing with some browser extension? How hard could it be to copy the crop detection algorithm from mpc?