Bug: iOS new Lock Screen, cover art has not the full resolution

Since iOS 16 it’s possible again to have a big cover art in the Lock Screen. But the cover art while listening via roon is a bit blurry, compared to the in app cover art. See screenshots.
Hope this gets fixed in a future update?

9 months later and nothing happened. Pretty embarrassing for such a expensive software.

Perhaps post in the support rather than the discussion area.