We are currently experiencing an issue where skeletal mesh vertex colors are different on certain mobile devices.

What we see is the following:

  • Red and Blue channels are swapped.
  • It occurs consistently on European Galaxy S7 devices (Arm Mali-T880) but not on the US variant (Snapdragon 820).
  • The problem is exclusive to Skeletal Meshes. Static meshes work as expected.

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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-53548 in the post.

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Cannot Reproduce
ComponentUE - Platform - Mobile
Affects Versions4.17
Target Fix4.20
CreatedDec 17, 2017
ResolvedMar 5, 2018
UpdatedSep 16, 2019