Using New Outlook on Windows for professional communication and productivity
You solved the problem by the method I gave you.
Method: hold down the Ctrl key and roll the mouse wheel to narrow the interface to close the screenshot.
It's my honor to help you solve your problem.
To help users with the same problem, please check "Yes" on my answer so that other users can find the solution quickly. Thank you for your cooperation!
I wish you a happy life! 😊
Best regards
Mia.W - MSFT | Microsoft Community Support Specialist