Weird quorum behaviour

I don't see anything suspicious in there.

The first two Tasks have been sent out on Jul 26, which means the deadline was Aug 10. At that date only one of them has been reported, so a third Task was sent out.

While that was in progress, the overdue first Task was reported. The two tasks formed a quorum and have been found to agree and thus to be valid. When the third task was reported, it was found not to agree with the canonical result (for whatever reason) and thus was marked invalid and granted no credit.

The reason for the third task beeing invalid is definitely not that it came late (else it would have been marked "too late").

BM