So I have noticed that when I put a point into the fire shield +1 ward per second (and so on) skill that once fire shield runs out, the ward starts to decay.
However, while it is decaying I can’t add any additional Ward to it. If I turn fire shield back on, the decay still goes down to 0 before the new fire shield starts adding more. Also, I have a few talents that make my melee attacks add Ward but again that does not work until my first batch of Ward runs completely out.
I am not sure if this is intended so that constantly casting fire shield does not make a crazy amount of Ward or if it is only partially functional.