You'll get an error when clicking the button 'Ausführungen' (Executions) on VARA object, which is absolutely as expected due to the fact that there will never be executions for objects like a VARA.
In fact the button should be visible on executable objects only. This issue only exists when using 'German' as the UI language.
Release : 12.3
Component : AUTOMATION ENGINE
the issue has been confirmed to be a bug and will be fixed with a future service pack for Automation Engine V12.3 .