Questão jurídica principal
Whether the cantonal court violated the parties' right to be heard by relying on the nullity of the share-allocation transfers without prior discussion or joinder of affected persons.
Decisão extraída
Yes. The cantonal court introduced a new decisive legal ground and affected non-party persons without giving them an opportunity to be heard.
Fundamentação extraída
The nullity of the March 22, 2007 share-allocation was a new and unexpected basis for decision. B.X.________ and C.Y.________ were directly affected, should have been joined, and were deprived of the chance to defend their position.