Another fiora ult bug
Sadly I don't have a video to show it, but what happened was I used fiora ult on a kogmaw, it landed on him, and I didnt pop a single vital before he died to teammates. Instead of the ult causing the heal to proc, it instead decided to stay on kogmaw as he entered his passive. I have not attempted to replicate this yet, however earlier on in the game, when I ulted the Kog, and procced vitals, the heal went off no problem.