I visited the leaderboard here on meta and it said in the blue box that my rank is 30. But in fact it is 32. There are two cases of ties in scores higher than mine and I speculate that’s the cause.
Those people are shown in the ranking at different ranks which is a second bug.
If the scores were 100, 90, 90, 70 then the corresponding people should conventionally be ranked 1st, equal 2nd, equal 2nd, 4th.
(First time I’ve even looked at the board, honest!)