Windows 10, multi Monitor, maximized window blank/empty space on top of screen

Has anyone had the same issue in this thread

https://answers.microsoft.com/en-us/windows/forum/windows_10-performance/windows-10-multi-monitor-maximized-window/3c2042ef-73df-401c-9a59-65b347d4dbea?messageId=eab5ad64-6ba4-4ac0-8302-44918954a53a

Happens to about 4 people in our business. Mainly the director :(

How can we escalate this bug to Microsoft to resolve