Jamba Proc used to be able to know when a spell procs, does it not anymore?

I used to have two action bars, one with the spell (shift-2 keybind) and one without (shift-1 keybind). Whenever Jamba told me the spell proc'd I would hit shift-2 and after back to shift-1, don't even have to stop spamming my attack key.

I know its an extra step compared to an all-in-one macro but if you can micro manage why not.