Can’t quit challenges

Random challenges won’t allow you to quit.  Pressing the menu button (Xbox one s) does nothing and you can’t get out of the challenge without completing it.  Otherwise you have to restart the game, which doesn’t save the progress  on that challenge either.  Very frustrating especially after you spend a lot of time trying to at least kill it and collect the tix.  Also, still lots of lag in-game with no apparent pattern.