Chloroplast does not always apply when cast on followers

[Whitegrave]

Sometimes when I cast Chloroplast on my follower, the spell fires and I get xp as well as the text

However the heal doesn't actually apply, and the pet doesn't receive its effects

Interestingly I can continue to cast the spell repeatedly until it "takes" at which point the spell begins to work as I get the "Chloroplast did not take effect" message as I would expect to see

[EJaynes]

This is already posted on our private board as issue # 13 and includes followers missing their native hitpoint regeneration that the base creature stats indicate.