P: Support scalable user interface UI for high resolution monitors

Your screenshots have nothing to do with this issue. Again, Microsoft is well aware of the problems, and we are working with them to get the OS UI scaling issues solved or worked around.
If you do not see or understand the problems - then it just means that you personally are not seeing or understanding them. Application and OS authors do see and understand the problems, and are working together to get them solved.

And I wish this platform allowed images in responses. Grrr.

Look at my screenshots that I've posted more than once. Looks like the other apps don't have these UI scaling issues.

Other apps either are putting up with the bugs that we encountered, or don't do nearly as much (or as accurately) as Photoshop does. Microsoft is well aware of the problems, and we are continuing to work with them to solve or work around the OS UI scaling issues.

What about your OTHER Adobe apps that work just fine, Chris?

Adobe worked with Microsoft to implement as much as we could given the state of Microsoft's UI scaling APIs. We are continuing to work with Microsoft to fix additional issues in Microsoft's UI code so that we can implement more flexible UI scaling.

I believe the menu items themselves are system drawn, while the menu bar isn't.

Just set your monitor for lower resolution.

Are your running Photoshop CC? or Photoshop CC 2014 (v2014.2.1)? What version of Camera Raw are you running? What OS/version are you running on?

It's not Microsoft's issue. Adobe chose to implement their UI in a non-standard method. Microsoft has provided a method within the OS to scale objects - it's 150%. But, Adobe has decided that they know better.