Kernrechtsfrage
Admissibility against the new owner after the property sale during federal proceedings
Extrahierter Entscheid
The appeal is inadmissible insofar as it is directed against the new owner, because the sale occurred after the cantonal judgment and no party substitution took place.
Extrahierte Begründung
Post-judgment facts cannot be introduced on appeal, and substitution of parties would have required the tenant's consent.