Spells: Boil Blood prevents Regrowth?

[fahlen]

Never experienced this until today, but I have been gone a while and quite a few changes have been made. A mob landed Spell: Boil Blood on me, and while it was active, Spell: Regrowth would not land. It would give a successful message "You begin to regenerate". But in fact does nothing. Not sure if a bug, but thought I'd bring it to your attention incase.