As my final move against the first gym leader,I had eevee use take down. It did enough to finish off ivysaur, but it also fainted my eevee. I still won the battle, and the game went on as normal, but I had no usable pokemon. I hadnt saved in a while, so I rushed to the pokemon center and saved after I healed, so I dont know ehat this bug could do to the game had I gone in the grass or something. Figured Id let you all know this was possible, at least.
Issue #1418 duplicate