Locked at canceling progress

Xbox Series X
Post game if you press B or any other button besides Y. The game locks to canceling in progress.

Also Post game. Scoreboards or Fireteam/Friends menu is in the background of the challenge progression. Launching interactive menus like that should be frontside. Kind of annoying waiting for the challenge progression bar to go away to see anything.

Be sure to file a ticket about his at the insider support page linked in you invitiation message. Much more chance to get aciton on it that way.