the only AoE buff i have right now is Veil of Accuracy. it is at lv2. the range says 16m, however i can only apply it within 9m of allies. now it may only be Veil of Accuracy. but it could also be the other AoE buffs as well. i do not seem to have the problem with the single target buff to increase max HP.
sometimes when i finish a battle i can not do anything. i mean i can move and chat and open window panes n' such. but i can not attack or heal my self with a skill. everything in the quick-bars become completely unusable for short period of time. this may or may not be limited to Medic class.