When I ALT+Tab or click outside the Spotify window, it stays in foreground and doesn't go in background. The only workaround is to press the icon to minimize it (which technically isn't the same thing as making it go in the background). This is pretty annoying because I can't ALT+Tab anymore to quickly switch between apps.
If I force close and open Spotify again it works properly, hence it's only happening when Spotify is auto-started during Windows startup.
I'm not sure when this issue started happening, probably more than a month ago. The last 2 updates didn't fix this.
It may be related to the Windows 20H2 update but I'm not sure.
Windows 10 20H2