Whether there is any link to this or not, it was working fine until I downloaded the Buck to the Future pack, which I believe was released on the same day as an update.
The point is, local multiplayer on Xbox Series X will-not-work, and/or crashes immediately if I do get it working.
On the title screen when it says ‘Hold X to join’ I do so, the X starts filling with green, then it either freezes or just kicks out the game completely. Very frustrating for my kids.
Come on Devs, please fix asap.