Edit Task > Actual End Date field not reflected in UI ?

Summary:

When modifying the "Actual End Date" value, the change is not reflected in UI.

Content (required):

Hello,

A task was completed by the employee on, for example, September 20th.

As an HR, when I edit this task and change the value of the "Actual End Date" field to September 25th, the change is not reflected in the UI.

Under the task, it still shows completed on September 20th. Is this the normal behaviour ? Am we only supposed to see the new date in OTBI / Reports ?

Thanks for your help !

Best regards,

Marcel.

Version (include the version you are using, if applicable):