I can run the app and it works but if I leave it for a while it goes to the background colour. I can right click on the taskbar battle.net and click settings and it opens up properly.
Windows 10, triple monitor setup all on a 1660Ti GPU.
I can drag the window and double click the top to go full screen. It’s only happened in the last few days (first noticed last night). If I close battle.net and reopen it works normally.
EDIT: To add why does the App reload the content every 2 minutes or so now?
It seems to be the Overwatch tab that is causing the issue. Sometimes going from another tab back to Overwatch fixes the issue, but not always. However if you don’t stay on the Overwatch tab it doesn’t ‘refresh’