I have the problem that sometimes monsters are skipped in a battle.
As an example, I had a PvP battle where the battle order bar on top of the battle showed Hackster, Shallinar and Barbatos for me. None of them had a negative status effect, but after Hackster the battle went immediately to Barbatos, and Shallinar never got to fight. She had no animation, so even if she would have had a negative status effect (more or less impossible as Hackster did hack the entire enemy team successfully) there should have been an animation to the effect that she is stunned or whatever.
This problem crops up here and then, maybe one in 20 battles, but very annoying if it happens, especially in a team war.
I'll see if I can reproduce this with a video, but as I don't usually record my battles and the bug is rare, I can't give you one right now.