Windows 10: Fullscreen aplications behaving oddly when mirroring display

I have two displays, a 1920x1080 monitor, and a 3840x2160 tv I'd like to mirror it to. The only issue is when I'm mirroring, fullscreen apps act differently when opened and closed, despite being set to the same resolution and scaling 1920x1080, the apps play the monitor switching animation like they would if the resolution was different from the app's but it's not. So to reiterate, all my settings are the same when mirroring, but the fullscreen apps behave differently.Here is a video demonstration of the difference https://www.youtube.com/watch?v=9BPaBt0ZfLI

:)

 

VOLUME SLIDER IN FULLSCREEN APLICATIONS

Volume slider on the top left corner doesn't show over games or fullscreen aplications, but it works the sound is going down or up or mute

 

Can mirrored (shadowed) rdp sessions go fullscreen?

If I use the /shadow:1 parameter to mirror a user's screens, the opened rdp window ignores the /f and cannot be sent to fullscreen by any means I know of.

In "normal" RDP sessions the user can right-click the top-bar and go to fullscreen, but that control is missing in rdp windows spawned with the /shadow parameter.

Why do shadowed rdp sessios behave differently? Is there a way to make it go fullscreen? Preferably with invidual monitors? I want to use rdp shadowing to easily stream individual students' monitors to a beamer.

 

Mirroring function

Just to make sure that this issue doesn't only occur on your particular PC, have you tried mirroring a different PC to the same TV? Did the same issue occur?

Have you also tried mirroring on the same PC before? Did it work successfully? If yes, what were the recent changes made before mirroring failed to work?

To make sure that you got the right steps in projecting a wireless display with Miracast, you may check these steps:

• Turn ON the Miracast option if your TV comes with built-in Miracast support.
• Press the Windows + I keys to go to
  Settings.
• Click Devices, then Connected Devices.
• Click on "Add a Device" and wait for the adapter to appear in the list. Click on the receiving adapter.

I'll be waiting for your response.