[GAMEPLAY]Malzahar's Malefic Visions will not spread when killing a champion with a "zombie" passive

Tested various cases with the following results: Malz kills Karthus with Malefic Visions active: no spread Malz kills Kog'Maw with Malefic Visions active: no spread Malz kills Sion with Malefic Visions active: no spread Sion's reincarnated berzerker zombie form dies with Malefic Visions active: no spread Malz kills target with Yorick ult and Malefic Visions active: no spread Malz has Malefic visions active on a Yorick revenant as it dies: no spread Malz has Malefic Visions active on a target that dies with Children of the Grave active: no spread Malz has Malefic Visions active on a Mordekaiser puppet when it expires: no spread Malz has Malefic Visions active on a Mordekaiser puppet when it is killed: SPREAD

There seems to be some general inconsistency with the behavior of Malefic Visions and Zombie mode cases. Any Rioters care to chime in?