Questão jurídica principal
Whether the challenge against the cost-advance order remained justiciable before the Federal Supreme Court.
Decisão extraída
The proceedings had become moot because the cantonal appeal was finally dismissed for non-payment of the advance, so the complainant no longer had a practical interest in reviewing the amount.
Fundamentação extraída
Once the Federal Supreme Court confirmed the cantonal non-entry decision in a related case, the advance order no longer had any independent practical effect; the dispute was therefore to be struck out as moot.