Naromon void stalker not decaying

[Pheonoxe]

I don't really know how to replicate this bug or how to visualize it's values, but upon its counter reaching 0 it's value appears to still be maxed. I was running a kronen prime and at max combo counter I consistently orange crit with a red or yellow here and there. when I used void stalker charged to the max, I deal almost entirely red crits, with an orange occasionally. I found that even though visually the void stalker counter was depleting I continued to hit red crits. This reset upon death, but using void stalker again yielded the same result.