If it does, then the paint flaking off will be the least of your concerns...:D
But I have to ask - why paint the inside at all? I would just think you run the risk of flaking paint clogging the oil pump and galleries. It isn't going to rust, and I don't know of any other sump that is painted inside. Also, is the VHT paint oil proof? It may just come off once you fill the sump with oil.
Just thinking out loud here mate, feel free to tell me to take a hike.:)
Another top effort there today cleaning that up.

