I have a rather strange problem. As soon as I log into Spotify Web using Chrome, my two external screens go black. Windows still recognizes the screens and I can use them, they are just black. When I log out of the Web App, the screens go back to normal. I am using a Lenovo T470 running Windows 10 in a docking station with 2 external Eizo screens. Using Microsoft Edge, the problem does not occur. Also it does not always occur. I had it a few times in the past, but was not able to connect it to Spotify. The problem usually went away after tinkering with on/off and the cables for a while. Today it occured again and seems to now be here to stay. I tried incognito mode and deleting the cache with no success.
Tl;dr: External screens go black when logging into the Spotify Web App