Death's Dance Not working as stated

Death's Dance states "Dealing PHYSICAL damage heals for 12% of the damage dealt."

This does not state it has to be from your champion themselves, just damage that registers as YOURS(ergo if enemy champ dies to it, you are given credit)

This excludes Malzahar's Voidlings, which deal physical damage, and are considered you DEALING PHYSICAL DAMAGE. The tooltip does not specify that it must come from your spells and auto's only, even then, his voidlings are his spell as they are his passive. I believe this is also an issue with his interaction with gunblade, which also does not take into count his voidling's damage.