BBC and Up Next

BBC iPlayer content shows up on the top shelf Up Next shelf with no issues on the main menu but within the Apple TV app BBC content fails to come through to the Up Next rail.

However, if I click onto the Apple TV+ menu then back to home the BBC content populates but disappears again as I move around menus and apps.

Everything else works as it should.

I suspect a bug between Apple and iPlayer. Is anyone else experiencing this issue or know of a fix?