"Number of instruments" setting not working

Hello,

I have been having trouble searching for music lately... Say I want to look for music to play on my clarinet. I would normally go to "Filter by instruments", click Clarinet, then "Number of instruments", and click 1. But today when I tried this the first score had 22 parts, which is pretty far from 1, and I had to scroll past 10 more results until i found one with only 1 part. The "filter by instruments" setting seems to be working-- everything involves a clarinet in one way or another. Additionally, this doesn't just happen if I want music for 1 part... it happens with every single number. It seems like the "number of instruments" setting doesn't work at all.