Makoa card bug

Hi all, i'm writing this post to report a bug in a makoa card, in particular barrier reef card. I have this card at lv 8, so every 3000 damage absorbed it reduces the cooldown of the shell shield by 4 second, in combination with ancient resolve lv 5 (increase the duration of the shield of 1.25 seconds) and half shield legendary lv 5 (it places the shield and the shield lasts 2.1 seconds longer). In game i usually buy chronos and i noticed that very often, when the enemies destroy the shield the cooldown isn't reduced by 8 seconds + chronos but it seems reduced just of 4 seconds + chronos. I tested the cards in shooting range and all works fine, but in game the cooldown for the shield when it is destroyed isn't correct very often. Sorry if i made some grammar errors, i'm not native