If a villager dies while trying to lay floor the floor tile disappears and you cannot place a new tile down.
The villager had the job to laydown some flooring. The villager was a few tiles away, I assume switching the job from pending to in process, but in that moment the villager died. The in process jobs cancelled instead of reverting back to pending.
I tried to laydown new floor tiles, but the job couldn't be applied to that same world tile. I'm setting the floor tiles over empty space to make bridges, so that might be having an effect.
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