Masked material shadow problem(UE 4.11.2)


Masked materials seem to cast shadows in weird ways in 4.11.2 for me. Basically, for certain mask amounts, all or some of the masked areas of the mesh keep casting shadows. I made a video to compare what happens in 4.10.4(works fine) and 4.11.2:

Am I missing something or what?

Any help is much appreciated!

It seems to me that problem is not in masked shadows but with some odd difference with main and shadow pass. Because your material is so simple I guess that problem is in object position or world position node.

Thanks for the insight!