Double co doms that are in the blue eyed leucistic complex, which are not supers of a single gene, also will not produce normals if paired to a normal.

For example: a blue eyed leucy which is comprised of the lesser gene, and the Mohave gene, can be bred to a normal and you will only get mojos and Lessers..

I bred a blue eyed leucistic which was a lesser x Russo leucistic to a normal female multiple times and only got russos and Lessers. There was no chance of getting any normals with that pairing even though the male not technically a super and the female was only a normal.