Hey, no shame still being on last-gen. You're not alone.
The Cavs' City court wasn't added when most of the others were a couple weeks ago - choosing their City uniforms just used their default court. Judging by YouTube videos, current-gen is updated with the correct courts, as you'd expect. After one of those in-game updates (the kind that just gets applied at the main menu) last week the Clippers' City court loads with the Cavs' uniforms.
I reported it to 2K Support and was told the appropriate team was notified.
So...I don't know if the missing courts get added in the next patch or what, but you'd think it'd be a simple enough adjustment to at least link those jerseys to the default Cavs court again. But that's me looking from the outside, what do I know?