Good point. I was going to say that leaf wrinkle like that is usually my first sign of over fertilizing before the leaf actually roles down and claws. I am positive that the mother was slightly over nuted and they should come out of it soon. I am actually cloning an over fed plant and the leaves are still rolled down some. The reason I get over and under fed plants is because I play with several varieties and some can't take a lot of nutes and some can't get enough. Your breeder may have the same issue. Different strains will have very different nute needs. Yours may be one of those that doesn't like strong nutes.I would think that the leaves are indicating that this mother plant was not happy so to say . Often people will clone and share from old mothers who are stressed and in the end the clones are off beat as well untill nurtured back to health .
How long have you had these , they look recently acquired by the looks