Questione giuridica chiave
Whether the public law appeal was admissible against the cantonal remittal order and the accessory appeal-costs ruling.
Decisione estratta
Both challenged cantonal decisions were incidental; the appeal was admissible only if an irreparable legal harm was shown, which was not established.
Motivazione estratta
A remittal to the first instance and an accessory costs decision do not end the proceedings. The applicants could contest the costs after a final merits decision, and their alleged risk of difficult enforcement was unsupported, especially given the respondent's security ordered earlier.