[HELP] Baby Reaper King not getting shown levels

[Crauford]

I've tamed two Reaper Kings by now, and on both, my "impregnation buff" showed I would get +75 levels after killing a lot of stuff, but after they are born, I got less than that. One was initially 105, and was born an 161, I don't remember the other, but it was 75 and ended up around 120. I'm certain I killed enough creatures up until my EXP was capped on both times, but math is not mathing. Has anyone run into this issue?