Windows App, pasting files hangs OS

We have been seeing this same issue with UDP connected users. they suddenly appear to freeze up but background services continue to run and even files uploading to a network share continue to upload. keyboard and mouse input is non responsive and never returns. They have to force disconnect and then reconnect to restore input. they are fine the rest of the day. this issue started with Windows App 2.0.419.0 version and on. tested on a system that still had version 2.0.366.0 and we could not recreate the issue. We can also recreate this same issue in the lab by very briefly interrupting the UDP stream. the session will soon freeze up and never recover. Our workaround right now is forcing all our endpoint connections to windows365 to TCP until MS figures this out. Not ideal but it's better than all of our users freezing intermittently each day.