When updating Transform of InstancedStaticMesh by UpdateInstanceTransform, PerInstanceRandom used in Material is updated.
With 4.16 does not update the RandomSeed value.

Steps to Reproduce

1. Place the Actor that owns the InstanceStaticMeshComponent on the level
2. Updated coordinates with Updat Instance Transform for Instance of InstanceStaticMeshComponent (applies Mark Render State Dirty).

PIE of the attached reproduction project, the color of InstancedStaticMesh is updated by UpdateInstanceTransform.

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Affects Versions4.17.2
CreatedOct 18, 2017
ResolvedJan 11, 2018
UpdatedJun 23, 2018