I don't understand how such an obvious bug is still being asked for so many details. I can reproduce this on all my real PCs and VMs.
If you're a developer and work through RDP you'll notice this each time all the dev tools keep resizing and all the little tool windows get pushed around the screen.
Is nobody using windows 10 at Microsoft as a development environment? If so, I would have been so annoyed by this and did something about it! This says so much on so many levels about Microsoft these days... not all of us stay with our heads in console command lines. 10 years ago nothing like this happened on the desktop side of things... now everyone is using web desktop wanna be apps. How have we fallen!
Also, this is somethig that was recently introduce because I have my multiple VM working setup since well before 1903 and nothing like this happened, it's only recently that each morning when I open my RDPs I get screwed by this and have to spend 5 minutes rearranging everything!