mercenary no crit chance

i take passive node for crit chance for attack around 85% on tree,

but all of my merc skill include basic attack doesnt even show critical chance. is it a bug? or is there a reason mercenary cannot do critical?

https://ibb.co.com/FWTHCrp
https://ibb.co.com/7gH131R
https://ibb.co.com/nzTjLHZ
https://ibb.co.com/tBD6xkK
https://ibb.co.com/q7J2jYC
https://ibb.co.com/xzq9S2g

heres all the tooltip shown , no critical chance whatsoever even after putting 85% crit chance on tree

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whitespear#4446 wrote:

but all of my merc skill include basic attack doesnt even show critical chance. is it a bug? or is there a reason mercenary cannot do critical?

Every screenshot you linked that doesn't push the "Critical Hits" section past the first page shows 12.5% crit chance, which would be 150% increased from a base of 5%.

so does main hand crit chance effect skill crit chance?
is it different from skill gem like sorceres who show crit chance on their skill tooltip?

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whitespear#4446 wrote:

so does main hand crit chance effect skill crit chance?
is it different from skill gem like sorceres who show crit chance on their skill tooltip?

Yes, Attacks use your weapons. Weapons have damage, attack speed, and critical hit chance, and these stats are used as the base for all Attack skills you use with that weapon.

For spells, these base stats come from the skill itself.