Key legal question
Whether the Obergericht was improperly composed because a judge who heard the case was replaced for deliberation and judgment.
Extracted holding
Yes. The short-notice replacement of the judge who had taken evidence and heard the parties lacked a sufficient objective reason and violated the guarantee of the lawful judge.
Extracted reasoning
After an oral hearing, strict reasons are required for changing the panel again at judgment. The court gave no convincing explanation why the judge who heard the case was replaced for deliberation, and a presumed deeper familiarity of the reporting judge was not enough.