Questione giuridica chiave
Whether the federal complaint was admissible against the cantonal remand decision insofar as it challenged only the refusal of party costs for the cantonal appeal.
Decisione estratta
The complaint is inadmissible because the challenged decision is an incidental remand decision, and the cost allocation as a mere ancillary point cannot be attacked separately.
Motivazione estratta
A remand decision is an interim decision under Art. 93 BGG. No irreparable disadvantage was shown, and no material instructions bound the lower court. The appeal targeted only the ancillary cost ruling, which is not independently challengeable outside an admissible complaint against the interim decision as such.