Sorry, don't have time to do the official form, I may get logged out at any moment (first time I've even been able to log into the forums in several days)
Basically the genetics for Reaper babies is completely glitched. I know what a Reaper baby/child should look like, I have almost a hundred of them in my game. The ones being born now are stretched, or squashed, morphed faces, just absolutely not right,
Test with and without mods, tested with and without mods and a reduced number of sims in world (below 200), tested with and without mods on a completely fresh save. Issue still happens.
I will try and update with more details when whatever is not allowing me to log in or stay logged in is fixed.