Fewer layers when scaling up

I have an object that is 150mm in height with 1225 layers at 0.2mm layer height in Preview. When I uniformly scale-up the object 130% (resulting in ~195mm height), the layers DROP to ~1000 in Preview at the same layer height. The math doesn’t make sense. I would expect a taller object to have more layer lines if both versions are at 0.2m Layer Height. What’s gong on?