I see this as a safety feature, to be honest. Running a browser on admin privileges seems reckles to me. Edge not working while under admin privileges protects the user in case of random malware site exploiting the scalation for whatever.
1. It's not about safety.. we can already right-click on the icon and select run as admin to run Edge insider browser with Admin rights. so there is no point in not being able to do the same in a different place. 2. for some intranet websites on my server and WAC, I need to run the browser as admin. it's annoying to have to right-click on the icon and select run as Admin everytime.