Ned Fulmer bug with heart shield

I noticed that sometimes when the heart shield is used for ned, it does not turn off.

Screenshot of when I activated heart shield:

About 10 seconds later:

the cooldonw is only 4 seconds so perhaps your hero used it twice.

I checked the simulation and the heart shield was never inactive over that time. Even if I were mistaken, the health would not be exactly the same, there would have to be some decrease.