Personally, I think this is due to "Microservices". You have a separate "search" microservice whose data is out of date or misaligned with the "product listing"

Personally, I think this is due to "Microservices". You have a separate "search" microservice whose data is out of date or misaligned with the "product listing" microservice. Same goes with Amazon and international delivery on some level. It's gotten better over the years, but there is still such a mismatch such that you can't "filter" only "international" delivery items.