Not sure if this has been reported yet or not, but see the attached image. I get this weird discoloration after denoise happens on my render. The whole scene has a basic cube with Corona Volumetric Material applied, if I hide this box, the error disappears.
Never seen this until recently. Additional info also supplied. (I know, I've got kinda crazy camera tone mapping settings applied - it's for an unusual project!)
Cheers,