Questione giuridica chiave
Whether the cantonal judges and clerk had to be recused because of their prior participation in earlier proceedings involving the appellant.
Decisione estratta
Prior participation in earlier proceedings, without objectively serious procedural errors or other circumstances creating an appearance of bias, was insufficient to require recusal.
Motivazione estratta
The court reaffirmed that only objectively established circumstances can justify doubts about impartiality. Mere involvement in a prior case, even one later challenged, does not by itself show bias; the earlier federal annulment did not reveal such serious legal error as to create an appearance of partiality.