Hmm…
Not really the mileage for changing the oil.
Obviously, it wouldn’t do any harm. If you do get it changed, remember to insist on the proper lifeguard oil and zf filter (which is incorporated in the pan), these two are critical for proper operation
I take it this is just at start up, when the oil would be cold?
Is there a leak, low on oil?
This isn’t a quirk, it shouldn’t be doing as you say