Merge Actors with Merge Materials does not create the uv set necessary for the new texture it generates

Development Asset Creation
1

Merge Actors with Merge Materials does not create the uv set necessary for the new texture it generates. Am i doing something wrong or is this a bug?

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It’s a bug. Try disabling Generate Lightmap UV; I’ve noticed it sometimes creates a lightmap UV only and assigns it as the material UV instead of creating two separately.