Empty Palm: Slows at early levels then when mastered it says 'Incapacitates for 2 seconds.' Which I would assume would stun, however it doesn't seem to do anything different from the previous level after you master it.
Rapid Palms Stance: Halves Crit Rate for an extra 30% Attack Speed and 30% CDR. When you use it the first time after you learn it, it halves Crit Rate normally, but after a while of having it on it lowers Crit Rate even more eventually to 0% Crit Rate. The only fix I've found for this is respecing your character and relearning the skill. But the normal halved Crit Rate doesn't last long enough for this to be worth doing.
Lion Palms: Silences the opponent for 2 seconds. When mastered, it says it slows while the opponent is silenced. However either the slow is unnoticeable or just doesn't work. People have still ran away from me while silenced from Lion Palms. Not sure if this is supposed to be like this or what.
Mountain Palms Stance: You perform a Mountain Crusher instead of a normal Critical when you Critically Hit with Melee. Reduces Attack Speed by 20%. I've tested damage between MC and Melee Criticals and the damage is definitely not the same, it also doesn't slow or stun like the normal MC is said to do at mastered.
Mountain Crusher: Not 100% sure on this one but I faintly remember MC saying it slows and stuns slightly by the time it Masters, actually I think its by level 2. But it doesn't do anything like that at all. Again not sure on this one.
128 Palms: Cannot use 128 Palms while Lion Palms is on CD.
Disable Stacks: Says Melee hits put 2 stacks and it takes 10 stacks of disable for the disable to go off. I've tested this multiple times and every time it takes 7 non critical hits to supposedly get 10 stacks.
Disruption: Melee hits cause a debuff of 50% more chakra cost and 50% less chakra control for 10 seconds. I've tested this with Elp and Musab, it seems to not work 100% of the time. Not sure if this was changed and just not the wording or something.
Pretty sure that's all the bugs I have found or were told of so far. If I find any more I'll update this and bump it.