Ventilator - just read the comments in the manual: if your entity is too small, as is the case with your egg in your level, its default bounding box goes down all the way to its feet and you have to fix that.

vec_scale(my.min_x,0.7);
vec_scale(my.max_x,0.7);

Otherwise the code example permanently presses the BBOX on the ground and gets your entity stuck on any edge on the floor. The c_move code example was for players in the standard size, as our actor models, not for eggs!

Still, if anyone has a level with a normal player where my movement example does not work, please upload it and I'll fix it.

You can easily see bounding boxes by pressing [F11] twice.