leaves twisting on top

okay my newest leaves on some of my babies are twisting. What could this be? only the newest set of fan leaves are twisting, kind of curling so the bottom of the leaf is showing upwards

pics cause i might be experiencing the same prob. could it be root lock for you cause mypot is semi small for my plant

well my plants are in 20L pots, but maybe I over nuted them by accident? would root lock cause permanent damage? could this just be the way my baby is growing?
I can't send pictures till tomorrow, sleepy time.

I have had leaves flip over do to shock