Shyvana jungle buffs, cool stuff...But that change to burnout on ult?

I actually play her in the jungle on purple side (occasionally.. still prefer j4/eve but hey if your team has CC in every lane and we need a melee carry.. why the fuck not right?)

Was that a buff to her ult or nerf (burnout) I never noticed it doing more or less damage. Though I do notice it sometimes not apply the first tick despite enemies standing on it...(i think its a rare bug...not sure what triggers that tbh)