Hi, an old problem, I encountered it for the first time quite a while ago, but this time I managed to isolate it
screenshot 1 - geometry
screenshot 2 - bug, slicer object is a single mesh combined from 1972 cylinders
screenshot 3 - the correct result, 1972 cylinders as separate objects
I had such problems with different scenes with different geometry, one of the cases - terrain exported from gaea. I used a box to cut a "tunnel" inside and it was visible through all scene geometry. I believe the core of the problem is the same.
Scene attached.
And by the way is it possible to add a mode change to the slicer? Subtraction/intersection