Visual glitch with Corpse Detonator and Wither

Corpses detonated by a rare monster with "corpse explosion" ability leave behind special puddles of blood. Casting Wither over them causes blending issues.

I've also noticed a very similar issue with projectiles of Vaal Constructs (little teapots that shoot green triangles) flying over elemental bombs from rare monster mod "minions explode on death" (or at least with its cold version).