When the Shocker mutator first dropped, Spectral Blade could reliably proc it with one special attack, but now it seems to only hit once in the entire AOE. Considering it was fixed/nerfed to no longer scale with range... If this is a bug, please fix it? If not, it's a balance change that would be nice to see (i.e., make the special attack hit 5x instead of one big hit).
Edit: It still procs on one enemy up close, but the edge of the AOE no longer does. This change happened several patches ago post Awakened King.