UE5.7 Mutable Plugin Overlay Material not working

[chiferito]

Summary

When assigning overlay material using Skeletal Mesh Component, overlay material overwrites parent material instead of setting as overlay.

What Type of Bug are you experiencing?

Rendering (Graphics / Niagara)

Steps to Reproduce

1. Download and open the Mutable sample object.
2. In CO_Character, Select the Skeletal Mesh Component for Body, set the Overlay Material to any material
3. Compile

Expected Result

In the newly created body mesh, material slot 0 should contain the original material assigned to the mesh, and it should have the overlay material in the corresponding slot.

Observed Result

In the newly created body mesh, the overlay material is in material slot 0 instead of the overlay slot.

Affects Versions

5.7

Platform(s)

Windows

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