I have boosted a character, and as such, do not have masteries unlocked. Because of this Everytime I kill something I get the "Your current ability is fully trained and ready to master!"
I do not want to skip content just to get rid of an obnoxious, inconvenient, nuisance of a popup. There is no way to turn this off.
I have also submitted several bug reports regarding this. Please advise on how to turn off this pop up that is nothing but inconvenient.