The UI Theme keeps getting stuck on 'High contrast'. This is extremely frustrating. I've tried dozens of times to switch back to the default theme. Sometimes it works sometimes it does not. I experience this in Edge, IE 11, and Chrome. I see no consistency in when it will work and when it will switch back to High contrast. I am reviewing a lot of pull requests, and having the 'High contrast' setting on really hurts my eyes and makes the code hard to comprehend. I'm losing my place all the time. Please investigate this. I know of at least two other team members who experience this as well.