Ashiok Mill Doesn't Remove Card From Player's Deck

[UrzaMTG]

When an opponent uses Ashiok, Dream Render's -1 ability on the player, the 4 cards milled from the deck are not removed from the tracker. I'm guessing this is because the client never actually registers them as in the graveyard, or at least not long enough for the tracker to find them.

Example Log 1 (the turn my opponent cast Ashiok, which also exiled other cards in my graveyard):
[20:45:53] INFO void MtgaMatch(315): Turn 24 started
[20:45:53] INFO void MtgaMatch(203): Opponent draw UNKNOWN 0
[20:46:03] INFO void MtgaMatch(214): Opponent cast Ashiok, Dream Render
[20:46:10] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:10] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:10] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:10] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:10] INFO void MtgaMatch(245): No Escape exiled
[20:46:10] INFO void MtgaMatch(245): Price of Betrayal exiled
[20:46:10] INFO void MtgaMatch(245): Tamiyo's Epiphany exiled
[20:46:10] INFO void MtgaMatch(245): Makeshift Battalion exiled
[20:46:10] INFO void MtgaMatch(245): Ugin's Conjurant exiled
[20:46:10] INFO void MtgaMatch(245): Gideon's Triumph exiled
[20:46:10] INFO void MtgaMatch(245): Lazotep Reaver exiled
[20:46:10] INFO void MtgaMatch(245): Despark exiled
[20:46:10] INFO void MtgaMatch(245): Vizier of the Scorpion exiled
[20:46:10] INFO void MtgaMatch(245): Makeshift Battalion exiled
[20:46:10] INFO void MtgaMatch(245): Island exiled
[20:46:10] INFO void MtgaMatch(245): Swamp exiled

Example log 2 (The next turn where Ashiok's mill generated the only cards in my graveyard):
[20:46:38] INFO void MtgaMatch(315): Turn 26 started
[20:46:38] INFO void MtgaMatch(203): Opponent draw UNKNOWN 0
[20:46:46] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:46] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:46] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:46] INFO void MtgaMatch(236): UNKNOWN 0 discarded from library
[20:46:46] INFO void MtgaMatch(245): Lazotep Reaver exiled
[20:46:46] INFO void MtgaMatch(245): War Screecher exiled
[20:46:46] INFO void MtgaMatch(245): Swamp exiled
[20:46:46] INFO void MtgaMatch(245): Totally Lost exiled