Catenary spline model does not follow the vector

Hello,

So i made a simple catenary spline, which should be completely horizontal, but in the Map Editor it's somehow not paralell with the ground (despite the fact that the vector points at the right direction.) Laid continuously.
Edit: It can be seen even in the Content Tool as attached.

Zitat von Marcel Kuhnt

Please try that: copy your x3d file and texture into another new working directory and import it as a normal spline. Does the problem occur yet?

Yes.

I also made something like a test object, which was a 45m long box with 0,05*0,05m dimensions, and the problem still occured.