There has been at least one bulldog (she's part of my meet up group) who had pancreatitis and her vet attributed it to the addition of coconut oil.
There was also a member here who's bullie also developed it. From what I remember, their vet also told them to stop giving it.
If I'm going to give oil, I stick with Salmon. Coconut oil does not contain Omega 3's that Salmon oil does and there hasn't been any independent research done to support
the claims the coconut oil companies are making.
None the less, many do use it and swear by the results. Much like with everything, each dog is different and will react differently.