Using any jutsu inside of Primary Lotus will bug both players, freezing them until they relog (resetting vars has a chance to not let them use jutsus at all).
Using Morning Peacock on a clone will some times freeze you in place and not allow you to move until you relog.
Whirlwind Kick and other moves spam Execute on clones (just spams chat, nothing insane).
Hyuugas can use Rotation before they hit the ground on Primary Lotus and Hidden Lotus to negate all of the damage. Not sure if this was intentional, if it was never mind it.
Some of Tai Spec passives don't actually do anything, would be nice for the ones that don't do anything to have their text changed so players don't get them and have to spend ryo to change their skill tree.
There's a bug with one of their moves and Hyuugas Rotation, not sure what that is. If someone knows please feel free to post it below.
I'm sure there's more I'm not thinking of right now, so if anyone knows any more please post.