Critical Bleed Rune - Zero Damage Crits

There is a Rune that causes Bleed on Critical hits.
(I believe the Rune is Leh)

Since the last patch changed Miss to Zero, I have noticed that Orange 0! Crits cause the Rune to activate and cause bleed.

Other on-hit effects don’t activate on Zero Damage hits, so I assume this is a bug.