In the tutorial dungeon, I tossed a candle onto the oil surface that the mummified skeletons were standing on. The oil lit on fire correctly, and the skeletons correctly fled the now burning surface... but the problem was that they didn't seem to take any damage at all from being on the surface, which seems to defeat the point of setting it on fire.
I saw this just now - I lit the oil with a thrown candle, they both moved off, only one of them caught fire and took damage. I think we may be seeing enemy saving throws in action.
