PerInstanceSMCustomData is bulk serialized and doesn't get changed on the BP instance when changing NumCustomDataFloats, possibly causing out of bounds array access leading to a crash.
Possible solution is to fix up this mismatch in UInstancedStaticMeshComponent::PostLoad()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-164023 in the post.
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Component | UE - Graphics Features |
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Affects Versions | 5.1 |
Target Fix | 5.2 |
Created | Sep 16, 2022 |
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Resolved | Nov 10, 2022 |
Updated | Nov 28, 2022 |