C4D Alpha 4.1 - shadows through refractive glass

I’ve some trouble with shadows through refractive glass. Any ideas? alpha 4.1

p.s.: Its also depending on the camera angle, really strange!


This is unfortunately a bug in Corona’s core. Therefore affects all versions regardless of Host application.

Here is more info and workaround methods :

And Ondra’s estimate for solution:

I think it is time to finally fix this in 1.5