When you redo the loopcut, you just snap the points the same levels, how do you do that please?
And when you loopcut, the loop is only on 1 face, for me, the loop is on the whole mesh, any idea?
(Would be nice if you could turn on the addon so that we can see which controls are you using!)
Thanks
Hey nnayas , if the loop is only one face then there is an n-gon or a triangle that's stopping it. Does your topology look like this before you make the cut?
If it does, try removing doubles (merge by distance) or recalculating all normals.