Questão jurídica principal
Whether the cantonal court had to hear the appellant again before declaring the amended claim inadmissible.
Decisão extraída
No prior additional hearing was required because the admissibility of the amendment had already been at issue and the parties had addressed it.
Fundamentação extraída
The court did not rely on a new legal basis unforeseeable to the parties; the issue had already been raised in first instance and in the written appeal procedure.