I installed PowerUI in my Unity 2020 project. I followed the advice and removed lines referencing the MovieTexture and changed my player to use .Net 4+.
When I load any of the example scenes I get a weird looking scene with a blue box as the background. When I drop an "In World UI" node into my scene it hijacks the camera, points it straight towards the positive z direction (I think?) and the entire background changes to that same blue box. Even overriding the body CSS with "background-color: rgba(0,0,0,0)" doesn't fix this.
I'd provide a screenshot but in the process of typing out this issue now all I see is blue. None of my textures show from my 3D scene and even the 4th example for the In World node doesn't display the TV anymore.