I also did this and came to the same conclusion.I selected a random card, not the one the hero was original at before I clicked shuffle. 50 times in a row, the hero did not move. Stayed in the same spot., So the did the next test, 30 times I got a purple hero i selected the same card, where the hero originally was, and guess what, he moved one spot left or right, but was never in the same spot as the previous 30. Rigged, I think so.
