Cinderhulk/Sunfire Cape glitch with Sion

This never happen on LumberJack Sion but with the new Mecha Zero Sion I noticed something. I had to jungle the last few times and after a team fight with all the CC/debuffs and etc and then death. I noticed that my cinderhulk and Sunfire Cap stop the buff for "BURNING!"... and yes, I know they do not stack. I play Sion top and jungle but some reason at least I notice it the most with cinderhulk that the BURNING! buff disappears after death on Mecha Zero Sion. I noticed because as I was getting to top lane(from blue side) through the jungle, the monsters did not attack me once but once I got back into combat, my burning! buff came back when we got into a team fight. Is there a bug with sion's passive or the skin or something that is causing the animation/buff not to be working? Next time I play Sion, I'll be sure to record it. I just noticed it today.