Licensee reports incorrect results with FindLocationClosestToWorldLocation when used with non-uniformly scaled spline components.
Attached a SplineTest2 project.
There are 2 BP_SplineActors - they render the closest position on the spline to the player pawn with a red sphere.
Use the eject feature and you can see that one spline correctly renders the closest position but one does not. The one that does not work correctly has a non uniform scale in the root actor. In this example Scale [8, 1, 1].
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-159928 in the post.