When I try to upload a video, the file extension is supposedly supported, and yet it fails to load. What usually happens is that it reaches a certain percentage (such as 5%) and then alternates between reading that and the next lowest one. The number it reaches seems to pertain to the file size (smaller files equal bigger numbers). I’m using a Windows 11 Lenovo and Firefox. I’ve tried uploading both .mp4 files and also .avi files, of varying lengths–most were less than a minute. Out of several attempts I only got one to load, a short .mp4 file. I expect that this is a bug; can someone please fix it?