In DX Operational Observability, completed or finished maintenance windows are not visible within the default Management GUI view. This includes windows that were manually ended or reached their scheduled conclusion.
The GUI default view filters out maintenance windows once their status changes to "Completed".
As per documentation, to view completed maintenance windows, manually apply a filter to the list:
NOTE: there is a permanent display improvement (Defect DE683437 :Add a button filter to quickly list the "completed schedules"), it is targeted to be fixed in a future release. For updates on the fix status, subscribe to this article by following the steps in