The old payments page was the same - it didn't say what had actually been paid - it was generated data from the rewards page.

Amount too small = dust = less than 10,000 satoshi - that was simply hard coded for the payments page.

When I complete the new stuff it will also show the transaction related to each payout you get - it comes from the blockchain, not generated from the rewards, so there's no way for it to be wrong, other than a bug reading the blockchain