For comparison, this issue doesn't seem to occur when recreating the setup with Set Material Attributes/GetMaterialAttributes. It seems isolated to the Make/Break nodes.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-134248 in the post.
|Component||UE - Rendering - Materials|
|Affects Versions||4.26.2, 5.0|
|Created||Nov 8, 2021|
|Updated||Sep 22, 2022|