Issue
'Request Approved' or 'Approved' stage is appearing on the workflow stage list of the Requested Item even though RITM is still 'Waiting for Approval'.
Cause
This is the expected and default behavior for the workflow stage renderers Workflow-driven, Legacy, and Requested Item Renderer. This stage refers to the parent request stage.
Resolution
If you wish to remove this, you will need to do customization on the column renderer [column_renderer] of the stage renderer type you are using.