PBR is broken in Qt 5.11/12, MetalRoughMaterials don't support Point lights, Albedo is screwed...

Writing Substance-based PBR Scene, I am having critical issue with Qt's PBR implementation.

Open the attached sample and edit the QML file to match your paths. The sample texture is in Tex.7z. References how it should at least try to look like is attached.

Run the sample, with the Rough metallic material component. Notice that the yellow appears white as fabric, instead as pergament. And the point light have no role whatsoever.

Now, replace the rough with the diffuce component. Observe that it just looks far better and the point ligh works

Currently, this is a major showstopper for me!