Mob Spawners don't drop armor/bows anymore?

Hi all, I tried googling this but mostly saw stuff about Trial Chamber spawners, which is not what I'm asking about. Figured I'd come to ask the experts and smart-guys here to satisfy the curiosity instead of browsing changelogs for an hour.

When did they make this change? Was it alongside the Trial Chamber changes? I made a normal skeleton spawner farm and they're not dropping their armor or their bows. It's been a while since I've played a world this long and was wondering about this change, sorry if the question is silly or easy to find. I bet it makes item-sorters for spawner farms much easier to build.

If it matters the world is vanilla 1.21.4, on Hard difficulty, and it's a single-biome desert world.