Difference of the construct effect in the blueprint and in the game editor

Hi, I am aware that I posted this question often but since I can’t find or understand the problem and I had 0 response I really need help. I have a code in the construct so that point of my spline follow two meshes, the thing work in my bleurprint but once in the game editor it does not as you can see in this video :

The code is fairly simple as you can see on the picture below. Any Idea why my spline point does not follow the static mesh in the editor?. Thanks