Overriding the art on the front of a card causes the same art to be used on the back

[Tarnop]

With the following decklist and --use_official_art=true on the command line

Expected result:
1 - MTGPics Toralf, God of Fury on the front, MTGPics Toralf's Hammer on the back
2 - Scryfall scan Toralf, God of Fury on the front, MTGPics Toralf's Hammer on the back
3 - MTGPics Toralf, God of Fury on the front, Scryfall scan Toralf's Hammer on the back

Actual result:
1 - MTGPics Toralf, God of Fury on the front, MTGPics Toralf, God of Fury on the back
2 - Scryfall scan Toralf, God of Fury on the front, MTGPics Toralf's Hammer on the back
3 - MTGPics Toralf, God of Fury on the front, MTGPics Toralf, God of Fury on the back

decklist.txt