Here is a screen shot of my archer showing how the attack skills are not active when standing right next to a selected mob. This happens about 75% of the time. It also seems like the archer has a far less range with a bow than other characters. This seems odd.
It appears the range issue was temporary and went away when I selected another character and then went back top the archer, but the skills bug remains. A lot of times, I can be attacking something and when it gets close, my attack skills turn dark and the fight will end.