I had a builder disapear. I dragged her to the top of the stone. She showed "held" until I selected another villager. Now she is gone. I have level 2 medicine, level 2 Fertility and level 2 science. Other three are level 3.

I also think I dismissed the Golden child box and I didn't even click the "ok".I clicked somewhere on the screen. It happened so fast I couldn't read it. Then got a notice I had reached another milestone of population.