It's about the option to choose between showing all alternative source terms on the glossary pane or not.
The old behavior was to show only the matched entry on the source side (only one). But now it's gone.
I admit that some users may prefer the current display (for some reasons I don't understand at all), but it should also be admitted that other users dislike it because it just makes visual term look-up more difficult: it's just distracting.
As the title says, I'm not requesting a novel, never-heard-of, unprecedented, epoch-making feature. I just want some antique back.
Fuzzy glossary matching is not relevant.