I find it so weird that even video the video manager on a creator's dashboard you still can't download your own content in 1080p60fps. The download option only gives you a 720p file, what gives @YTCreators @TeamYouTube?
Hmm, please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response back, we do review everything and use the details to investigate and fix issues. Thanks!