I have experienced 2 glitches:

1. for Moltres Ex Alt-art, infernal Dance activation does not activate the coin flip, hence wasted turn. (100% bug encounter over multiple battles)

2. Pikachu Ex alt art, Circle Circuit does 0 to 30 damage despite having a full bench. (Encountered once in random match, used against a cloyster and a chancey. When used vs the Cloyster, attack is 0; when used against the chancey, attack is 30, all while having a full bench, so it should have been 90+20-10=100 damage for cloyster with Shell Armor, and 90 damage for the chancey)