QWebEngineView fails to render through (old) windows Remote Desktop

This is likely an issue to core Qt as well.

QWebEngineView fails to render through Windows RDP on Windows older than 10 and Windows Server older than 2016.

If using 

AA_UseDesktopOpenGL

the application crashes very ungracefully, failing to create the Surface

if using 

AA_UseOpenGLES

the application shows a black screen

if using 

AA_UseSoftwareOpenGL

the application first complained about the software dll not being found, after putting that in place also shows a black screen

In the cases of a black screen, the application continues on as if nothing happened, no log message, no errors. Even the website is clickable and stuff happens. You just can't see it through the RDP.

Problem 1:

There appears to be no way to detect this happening, if there were we could offer an alternative menu that does not rely on WebEngine

Problem 2:

This makes the program fail in a very ungraceful manner and unfortunately for us, a lot of our users use our application through RDP - as we supply doctor's offices and hospitals who like to run all sessions on a server and connect to it - unfortunately often older editions of the operating systems.