It happens a lot on mains, when you want to wait longer before using mystery not immediately when you can, and game doesn't allow you to do it that round even though like move 3 and move 4 standards haven't even started or even clones haven't atacked yet. Or it just transfers skill activation to other round and takes chakra from that round not previous one and it kinda screws whole battle. Sometimes even if you have enough chakra skills can not be activated that round for some unknown reason, but i noticed if i pressed auto it actives this instance doesn't occur to often but it happened dozens of times and not only during pvp, skill delays happens more often. Also during pvp sometims move3 or move4 goes before my move1 or move2 don't know if it is some sort of lag, but my connection is at best, but it happens kinda often in bonds arena.