About a hour in on version 77, noticed that on Combusken his attack 'BOUNCE' will not work, just freezes after you go into the air and then you have soft reset the game. Also caught a Psyduck that was level 5 and its now level 30 and it hasn't learned any attacks yet.
Another thing I've noticed is when Pokemon learn a attack form leveling up, you cant see any info about the attack and if you choose to try to learn the move, you HAVE to get rid of a old attack. The game doesn't let you cancel learning a move it you change your mind.
Other then these couple of issues so far, the game looks amazing and I've enjoyed it so far.