Found player-only blocks generating underground in vanilla (reproducible seed) — bug

I found something really strange in Minecraft Java Edition (vanilla, no mods).

Seed: 936383866786785
Coords: -737, 52, -774

There are player-only blocks (crafting table, grindstone, and cauldron) generated underground, with no structure nearby.

I tested multiple worlds with the same seed → same result, Vanilla launcher → same result, no structures nearby using /locate

This seems to be fully reproducible.

Has anyone seen something like this before?