Questão jurídica principal
Whether the federal complaint against the cantonal interim decision was admissible despite not ending the proceedings.
Decisão extraída
Yes. The decision could cause irreparable harm because failure to pay the advance would lead to non-entry and loss of the case.
Fundamentação extraída
A conditional order requiring a cost advance is challengeable under Art. 93(1)(a) BGG when non-payment may cause a process loss.