Supports Bottom Z distance not working correctly

I got a model here im trying to print with BambuStudio, however the supports that are not on the build plate but are on the base of the model are not correctly taking into account the Bottom Z distance
The support starts on the base for a few layers. then it there is a gap the distance of the Bottom Z distance following by a support interface even though thats disabled.

I tried changing all kinds of settings but i cant get the support to correctly start above the model accordding to the Bottom Z distance.

bambu studio file: Dropbox - Militia_troubleshoot.3mf - Simplify your life