While fighting a Harpy Enchantress, it continued to back away inch by inch. This caused me to run forward twice a round, and in the process invite an attack of oppourtunity. I was dual-wielding kukris, and I am a human.
I figure this has to do with combat animations and might be irrepairable. Also, harpies need all the help they can get; they don't do so much melee damage after all. But, all the same, I thought I'd put it on record with a report.
I do also use the alternate combat animation overrides.
This happens with nearly all monsters.
It has never happened to me except with this one creature.