Not sure if this was reported already, but camouflaged Hunter currently gives minor berserk from a crit heal while you are in stealth. You can replicate this bug by using rally and sitting in stealth on character with camouflaged hunter on its bar. It will refresh the minor berserk effect as long as the player is in stealth and is critically healed by their own skills. (I did not test if it also works from the skills of another or any proc sets yet)