Mercenary 2nd weapon set

Hello,

I would like to ask about situation, when i set up my plasma blast to be used only with 2nd weapon set,

I am also using galvanic shot on weapon set 1.

But when i set it like that my character wont use plasma blanst, it looks like he wont load this bolt to crossbow, and LMB change for basic shot.

Does some know what i did wrong ? or maybe it is some kind of bug.

After swaping set from 1 to 2 i still have enough dex/str/int to use all gems. same with equipment, so it is not about missing stats.