In the editor, vertex information can be painted on static meshes that are part of a blueprint.
When testing by playing in “Selected Viewport” the painted vertex information is correctly saved and displayed.
When launching the game through “Standalone Game” this vertex color information is lost.
Information painted on a standard static mesh is not lost, only meshes that are part of a blueprint.
Versions tested (issue occurs in all versions):
4.19.2 - CL 4033788
4.20.2 - CL 4302132
Result: The vertex information painted onto the mesh as will be lost in “Standalone Game.” This information is not lost when launching the game through “Selected Viewport.”
Expected: The information painted should not be lost in Standalone.
There's no existing public thread on this issue, so head over to AnswerHub just mention UE-64354 in the post.