Questão jurídica principal
Whether the Obergericht's allocation of all cantonal appeal costs and party compensation to the tenants was arbitrary under Art. 9 BV.
Decisão extraída
The cost allocation was not arbitrary; the tenants had initiated the cantonal appeal prematurely without first contacting the landlords, and the landlords' conduct did not make the allocation untenable.
Fundamentação extraída
A decision is arbitrary only if it is manifestly untenable. The Obergericht could reasonably assume that prior contact might have avoided the appeal and that the tenants caused unnecessary costs by filing the appeal without attempting an out-of-court solution. Even if the respondents' pleading practice could have reduced costs, assigning all costs to the appellants remained defensible because their premature filing triggered the proceedings.