PSA There's a bug with cascading rebirth

Testing Magmar recently, tried to make a deck using grow mechanics and using Juggernaut as a top end, lots of buffing cards and incidentally, trying out cascading rebirth with Juggernaut to make the new 9 drop legendary. Not only does it not work as intended, it makes a minion of 2 mana cost, happened to me on the ladder during testing and in a practice game against a bot.

Just a heads up for anyone trying to get cascading rebirth to grind out some value on ladder, happy testing everyone.