Game Freeze during combat damage step

Monkeynutts

Playing Emrukel event.
Arlin vs Arlin
Mid way through the game; my opponent has no supports and his creature is a greir reach bandit that is flipped 12/11.
I have 3 scion token, village messenger flipped 5/5 and a sage of ancient lore flipped 9/9 on the battlefield.

i use my arlin 1st ability on my sage to make him a 13/13. i then match gems casting nothing.
game moves to combat.
my scion and messenger deal damage to my opponent. my sage deals damage to the bandit and my opponent via trample...then the game freezes.
my opponents creature is a 12/0. nothing is selectable except the pause menu.

Only thing I can do is Quit the match.

not impressed..only loss