Recent Contacts different - depending on how i enter it


depending on how i enter my contacts - the list of the recent contacts is populated a differnt way:

When i open the phone app and the click on the “People” tab at the top the contact list under “Recent” has a specific order - i do not know by what it is sorted, or how the order is determined.

When i open the People app directly i have a different List of contacts under “Recent” - the order does match my order of phone calls (at least it is quite likely) - in contract to the list when i enter the Contacts via the phone app -> People tab.

It this a bug or is this the inteded behaviour. To me it feels like a bug.