Line trace doesn't work against spline mesh in standalone

Hello,

I’m making a tunnel-runner game where the tunnel is a mesh generated around a spline component.
I’m using a sphere trace by channel to cast the shadow of the character on the spline mesh.

It works as intented in the viewport, but when I package the game, the hit point always returns (0,0,0).
I tried with different types of line traces (channel & objects) and different parameters on the node, but it always return 0-0-0.

I know that the spline mesh is the problem here, because the line trace hits properly the other items.