It's possible this is an attack limit, I'll forward it anyway to check.
have you watched the video? , attack limit? nothing about attack limit is written in the skill info, and it isnt like that in kms, also. it happens also on monsters you did not even hit yet. for example if you stand and kill mob and new monsters spawn you dont hit them. maybe its something nexon changed to deal with bots or prevent abuse by bots but its really big deal for us buccs in boss fights and to damage a class that is so unplayed as bucc because bucc gameplay is already really rough game play so many buffs and energy and what not .. its a big deal. thanks and i hope nexon do something about it