Thank you for the additional details. We don't have access to that exact configuration, but I did try to reproduce on Intel HD 520 graphics under Windows 10 and .NET Framework using the Sample Browser application installed with v22.1.0. I configured the larger (secondary) monitor to the left of the smaller (primary) monitor and tried both 100% and 150% DPI settings on the larger monitor. I launch the Sample Browser application which starts unmaximized. I then maximize the window, minimize, and repeat maximize/minimize a few times. I have not been able to reproduce any issues with the window not sizing properly when maximized.
You mention this can only be reproduced on one machine. Oddities have been known to happen if the .NET Framework files become corrupted, so you may want to consider re-installing the proper version of the .NET Framework. Trying with .NET 5 or 6 might also help isolate if this is an issue with .NET Framework or a broader issue with the machine configuration.
If you have any window management software running that helps automatically position windows on wide resolution monitors like what you specified as your secondary monitor, that could also be interferring with "normal" window maximization logic.
We have not had any other reports of this issue after many years of availability on Windows 10, so I suspect this is something unique to that machine configuration.