I would confirm that it is because of google, but since the mentioned Luna Version is working again after a clean fresh system install,
i donīt think it is depending to google.
I forgot to tell that not a single one of IGO Versions with VR support was working with VR before i performed a clean flash.
Just copied my saved IGO_LUNA Folder incl.save folder to interal storage and VR was back.
But the Problem for me is that i donīt exactly know what has triggered the whole thing.