it looks like you had 4 people in the map when you enter. were the other two in the map as well when you entering?
i suppose the other 2 are in map as well otherwise we can't enter pq either way, if we enter shouldn't we have 4 in pq instead of 3?
Yup, you are right. I am trying to figure out what happened there so we can spot the issue. so far I couldn't replicate the bug. Can you please reply here if it happens again? Thanks for your report!