OK, we're getting closer to understanding what I don't understand, I think. Most past payout displays on Steemit treat beneficiary rewards as curation. Right? I think? That's why beneficiaried posts like this one list author payouts less than 75% and curation greater than 25%. But that one doesn't. It lists author payouts as 100%.
Busy displays it the same, so it's not just a Steemit thing.
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Ah! Cool, thank you for clearing up where I was wrong. So that original comment paid out its beneficiary but it just vanishes from both the amount voted and the payout display and looks like it never existed at all.