Notice of Screen Display Issue

Since yesterday's forced update, the Mahoyaku screen has black bars at the top and bottom like ⬆, and it's no longer displaying full screen. I tried changing settings but nothing fixed it, so I was feeling down, but then the official announcement about the issue came out! Good! But they said the cause is unknown, which is troubling... I hope they fix it soon. Are other Wizards experiencing similar display issues?