My favorite Ebay search engine change happened a couple/few years ago or so, probably unbeknownst to most.
Ebay seemed to have the only shopping search engine on the internet that didn't combine the term "boxing" (the sport), with all variations of the word "box", which you can imagine, is a huge PIA, for "boxing" collectors.
Well, lo and behold, it eventually happened.........because for some reason Ebay decided they hate searches for anything "specific".........even while they're shoving their concept of "item specifics", which adds untold amounts of time to the listing process, down sellers throats.