Mesh along spline disappears

[Leomerya12]

You didn’t respond (using “reply”) or tag me, so I got no indication that you reposted.

I’ve never encountered this, so I did a bit of digging.

Apparently (at least, in the past), meshes could disappear along the Z (Up/Down) axis. And seeing as your train ascends, this could be the case.

What version of Unreal are you on?

Spline mesh disappears when aligned on z axis

(Continued) If you translate x or y even fractionally away from [0,0] (say, [0,0.00001] then the mesh will reappear. Now more fundamentally, the issue appears to be just the spline mesh and there is no relation to the spline itself. The construction diagram can be reduced to just the Add Spline Mesh Component, and Set Start and End. Set the Start Pos at [0,0,0], Start Tangent [0,0,0], End Pos [0,0,100], and End Tangent [0,0,0]. Again the mesh will disappear. For more reasonable tangents, y…