When using material Translucent or Additive blend mode "Cast Modulate Shadow" problem

Development Platform & Builds Mobile
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1

Unreal Engine 4.9.2
Editor View

Editor.PNG
Editor.PNG897×324 412 KB

Galaxy S6, S6 Edge Normal image

Samsung_S6_edge_ModulateShadow_Off.png
Samsung_S6_edge_ModulateShadow_Off.png1024×576 786 KB

Galaxy S6, S6 Edge, Note4 - Cast Modulate Shadow On

Samsung_S6_edge_ModulateShadow.png
Samsung_S6_edge_ModulateShadow.png1024×576 721 KB

Material BlendMode Translucent, Additive Bug…
Why do these problems occur?

Galaxy Note5 - Cast Modulate Shadow On

note5_modulateShadow.png
note5_modulateShadow.png1024×576 765 KB

Material BlendMode Translucent, Additive Cool…

2

I have the same problem here, on 4.9.2. I found alpha materials work abnormal on Galaxy S6.

I saw it’s working well on Galaxy Note5, and even Galaxy S6 Edge Plus.