This is NOT a complex issue. You fix something like this in 20 minutes work of programming. They could even do a quick and dirty workaround, of just resetting the frame if you switch resolutions. They wont fix this. There are bugs like this since beta of Windows 10. For example, if you flip a tablet into tablet mode and switch landscape mode, there is a high chance, that the task menu date is shifted ut of the screen and you cant see it anymore. They never fixed this too, where it is easy to fix.
I do agree that it shouldn't be a complex problem to fix. But this is Microsoft we're talking about. I share similar frustrations about things that don't get fixed, such as this one: If you use the "Microsoft Store" version of Office 365 that is preinstalled on a new W10 computer, and change your default PDF viewer to the Adobe Reader instead of the Microsoft one, Outlook will forever prompt what app you want to open PDF attachments with, despite clicking the "always use this app" checkbox. The only solution is to remove the Store version, and download/install O365 from the portal.
I have several examples of things that have impacted Windows Server as well, such as one of the patches back in March that broke Ethernet adapters in virtual Windows 7 and Server 2008 R2 machines, or the .NET framework security patch that just came out a few days ago, that doesn't install successfully on 2012 R2 if the "preview" patch was installed the month before. Their workaround is to remove the preview patch and perform a DISM cleanup.
It feels to me, that Microsoft's QA is absolutely atrocious at finding things that should be caught, and we users have become the unpaid QA. Computerworld's Woody Leonhard (Woody on Windows) rails about that, justifiably, all the time. My personal opinion when it comes to Windows 10, is that Microsoft is far more focused on introducing new features, than fixing existing problems. I wish they would take a lesson from Apple, and have a cycle or two where they focus on bugfixes/reliability/stability/improvements that don't involve new features.
As for this specific overflow window problem, I don't know, it just bugs me more than "normal," and I intend on being a dog with a bone as long as it takes.