The bug
After successfully defending a village, villagers may sometimes pick up the seeds thrown by nitwit/unemployed villagers, even though they're technically giving it to the player.
To reproduce
Get the Hero of the Village or use this command:
/effect give @p minecraft:hero_of_the_village 1000000 4 true
Spawn unemployed/nitwit villagers
→ ❌ They are stealing wheat seeds even though they just gave it to you.
That is annoying... They just don't throw items far enough.