We don’t have any issues rolling around on the floor outside the penalty box thoughWe stay on our feet when there is contact and could have gone to ground like a lot of other team's players would have done in that situation.
Mitoma for example, in the box on Sunday, with his back to goal near the edge of the penalty area at the south end of the ground had several attempts by the palace player to barge him in the back for which he could easily have gone down under such a challenge and drawn a penalty, but instead he stayed on his feet. (something a lot of our fan base would rather see than buying cheap free kicks and penalties)