aura effect and influence on skill tree

I have selected these nodes the 4% less mana reserved, 6% increased effect of Auras you Cast and the 12% increased effect of Auras you Cast

But I notice no difference, I use grace, the effect of grace is increased evasion, why is that effect not increased by 20%?

That's a bug/inaccuracy in the tooltip but it still works. If you check your evasion in the character screen, you should see the difference.

I never noticed a problem with the tooltip. Are you looking at the tooltip on the gem or on your character screen? Is the aura running (ie, you're not in town)?

All I see is that the values at the gem itself are the same as at the activation icon. Normally when I change something I see the changes at the icons.

4% less mana reserved no specification for aura so I assume it is also for the heralds. With reduced mana gem lvl it has 28% less mana reserved which is 7%, 4% is equal to 1% less mana but the 4% less mana reserved didn't change anything at the % that is reserved it stayed the same for the heralds and grace.

At char screen under defense is hard to see if it works get the bonus from tree, will first have to calculate how evasion bonus I get from tree, check all gear for bonus, after that I can calculate if the increase visible at defense is the correct amount. If I miss even 1 thing calculation is of.