I used to own the parallax version of Ulamog, The Infinite Gyre but since recently it is somehow bugged displaying the non-parallax version. The same applies to Emrakul, The Aeons Torn. I know that the bar for alternate card artwork is low, parallax planes walkers producing non-parallax tokens to give an example.

Nevertheless, lots of players have paid a good amount of either gold or gems for this bundle. The least we players expect is for Wizards of the Coast to hold up to some degree of quality in the game.