Bug skill gladi Weakening Severe Blow III cooldown bersamaan dgn Body Smash I

kenapa ya kalo pake Weakening Severe Blow III otomatis Body Smash I ikut cooldown juga, dan
kalo pake Body Smash I otomatis Weakening Severe Blow III ikut cooldown juga..

padahal beda skill, beda chain skill pula..