Both the last 2 time I've done Dragonstorm (public and private, cos i thought that made a difference before reading this tonight) I've made it in time to press the special action key but not in time for the skill to completely proc.
feels pretty unnecessary that I had to find a year and a half year old thread about this.. it could just have 1/8th sec casting time and prevent any other skills from being used for 1s after or something..
Not bugged, sure. But certainly flawed