Why am I seeing different numbers of programs depending...

If I open Halion Sonic2 and click on a rack item to select a program, and then set the Category filter to Woodwinds and the Sub Category to Saxophone I get 96 different programs. However if I click on the Program slot in the Inspector for the track and setup the same filter settings I only get 52 programs. I’d expect to get the same number of results either way. Any idea of what’s going on?