Key legal question
Whether the cantonal court violated the appellant's right to reply by deciding after receiving the Council of State's supplementary submissions without allowing further observations.
Extracted holding
Yes. The supplementary submissions were decisive and had to be communicated for comment; the appellant's inability to respond breached equality of arms and the right to be heard.
Extracted reasoning
Any new submission must be communicated to the parties, who alone decide whether comments are needed. The fact that the letter was sent 'for information' did not remove the duty to allow a reaction, especially for an unrepresented litigant.