Key legal question
Whether the cantonal court committed a formal denial of justice by not expressly ruling on the formal validity of the municipal decision lifting the neighbors' opposition.
Extracted holding
No. The court could reasonably treat that question as outside the dispute because it was not formally prayed for, and the omission did not violate the right to be heard.
Extracted reasoning
A cantonal appeal court violates Art. 29(2) only if it fails to decide a submitted claim or argument within its competence. Here the brief only raised the formal defect incidentally. Moreover, the municipal syndic attended the hearing and effectively ratified the decision, so annulling it for the asserted defect would have been excessive formalism.