There is no glitch and the video is actually up there in 1080p, but a lot of YouTube downloaders are incapable of downloading files above 720p. I use 4K Video Downloader to get the highest possible resolution videos from YouTube, but I think it might not be free (I paid like 20 bucks a while back for it). The link is here: https://www.4kdownload.com/
I'll try to free up some space in my Dropbox (might take some time) to put the video there so that you can get it in best quality.
It turns out, unfortunately, to make the file downloadable, I have to be a paying Vimeo Pro user, which is not something I'm willing to do. I'll put the video in a file-sharing site later, and post the link here.