Static mesh view can't preview highlight for selected edge when generated lightmap UVs.
I saw a bit of code. The cause of this problem arises because UV data to identify the selected edge is none in case of GenrateLightmapUV. [Image Removed]
1.Open attached project.
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2.Open Static Mesh.
3.Change visible UV channel.
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4.Select to mesh's edge. It can't visible highlight edge.
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Case default: selected edge's highlight
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-55890 in the post.