ᐅ Defects in the Sliding Door Wrapping – Is This a Fault or Not?

Hello everyone,
we had glass lift-and-slide doors installed with a white finish on the inside and anthracite on the outside. Now we have the following problem: when I stand outside and open the sliding door, the vertical frame is white, not anthracite like the other three profiles. My window fitter says this is normal. However, to me, this frame is clearly on the outside and should not be considered part of the interior. I think he does not want to uninstall the door anymore because it would be a lot of effort for him.
How do your sliding doors look?
Thank you very much for your answers.

Only the parts visible when the door is closed are wrapped for us. That’s also the case for you, if I understand correctly. Do you have a photo?

A picture really is worth a thousand words...