really simple: Shaman class should give +20 to green mastery, but it gives +20 to brown mastery
fixed after reboot or was it devs? 
and now it is again there, what wierd thing is this? i know now that Shaman has +20 to brown mastery, but like on 2nd image it changes from brown to green sometimes.
pls devs can you correct this visual glitch? or i am the only one that has that glitch?
Hey, thanks very much for reporting this!
The colour is meant to be Brown, not Green.
It appears it’s giving the correct Gem Mastery bonus but the incorrect colour is showing on the Class info tab.
I’ve made a bug report for this and we’ll have it fixed soon.