Howdy!
This issue was resolved last night, make sure to restart the PC to force the Battle.net desktop app processes to reset and pick up the latest updates the next time you run it. Make sure if you utilize the Command line argument workaround or edited your WTF settings to go back and remove the change. We covered this data: Here.
If the issue were to continue this is going to be related to something else. I recommend to collect your Msinfo and upload it to a site such as pastebin.com and post the link back here for review.
Thank you.