Ok, so I did install UE 4.27 and the outcome is exactly the same:
- applying scale on Y axis on the spline point does scale the spline visualization shape properly but the mesh us unaffected (works from scale gizmo too, just like in UE5)
- applying scale on the X axis via the details panel does scale the mesh on the Y axis properly
- using scale gizmo on X axis changes tangents
When it comes to the scale gizmo it doesn’t seem to be a bug here as if the scale is working properly for the Y axis, using X to scale the tangents makes perfect sense. Considering that the spline visualization shape scales properly according to Y axis it seems like a potential bug somewhere on the spline logic (inverted X & Y) but then it is there for quite a while…