When I go to search for specifically released pets on Advanced Search it does not work. They show up but are mixed in with non-released pets.

I have the search set to show released pets so it's not a problem there. Not sure if its because of advanced search re-haul (This is the first time since the rehaul happened i've tried to search for released only) but I tried clearing my cache and that didn't help so not sure what the issue is gonna be.

If it still isn't working, I'd suggest trying a different browser or something along those lines. The server is indeed processing it correctly so it must be something on your end.