Does this skill level incredibly slowly, or am I experiencing some kind of bug?
I put a point in this skill well before I put one in Flare. Although I was swapping them back and forth for a while, eventually they were on the same bar all the time, before I morphed Flare.
Now, the morphed form of Flare is at rank IV, while Siege Shield is still at rank 1 a long ways away from being morphable.