Key legal question
Whether the judge who issued the mootness-and-costs decision had to recuse himself after taking part in the earlier annulled panel decision
Extracted holding
The recusal objection was forfeited because it was not raised as soon as the ground was known.
Extracted reasoning
A party must invoke alleged judicial bias immediately; by waiting despite prior knowledge and after being informed that the same magistrate would decide, the commune lost the right to complain later.