Pretty sure the bug can be reproduced on any other camera that runs ML, if you follow OP's instructions (i.e. play until level 4). 70D and 5D2 are pretty much opposite (5D2 is one of the earlier DIGIC 4 models, 70D is a recent DIGIC 5), so it's reasonable to assume most other models will behave in the same way.
I've barely reached level 3 and encountered that bug a couple of times.