When I was playing Arena after the new announcement for May went live I noticed that when I would destroy creautures of my opponent or when they would destroy creautures of mine they would still stay on the battlefield. If something with summoning sickness was destroyed the turn it came in it would still remain visually as though it had that the next turn, tapped creatures stayed tapped etc. No other counter spells or specific abilities came into play that would make it so stuff stays on the field either, destroyed creatures (might be artifacts and enchantments as well haven't checked that yet) would not go the graveyard. This made some plays not possible due, like when I tried to re-animate a Sheoldred who was destroyed, the game thought she was still on the battlefield and now couldn't bring the card back to my hand, battelfield etc. it was like the card did not exist at all. I have made screenshots hoping it would be clear enough of what I mean.