Artemis thunder charge cdr bug?

Is there a bug of thunder charge CDR? The cooldown time of thilunder is 12s without cdr(cooldown reduce), and it’s could reuse faster than other spell. But when you have some cdr, which is awesome for Artemis, some spell CD could is less than 12s. For example 50%, thunder charge is 6s and hail storm is 9s. when you use thunder charge+hail storm, the thunder charge is always recover slower than hail storm, the cdr looks not work on charge not, the CD is keep 12s.only you use thunder charge twice, CDr is working well.

HI, @CaptainMorgan .I like Artemis,only one could use my fingers.

I must let you see the topic, and fix it asap.