I had this problem with my 4th progeny (1st 3 were fine) -- my 4th kid didn't show in the family tree (just the 3 previous, my Sov's portrait was of a kid, and my Sovs' info page only listed the 3 previous kids names, if I clicked on my spouses pic I got the 4th kids info associated with the sov-kid portrait, and if I then clicked on the Sov-kid portrait I got the Sov info). 

I went to a previous, pre-4th progeny save, and continued on from there, and when I got a 4th kid again the bug repeated (same as described).

While ALT-TABbing out to post about this, after going back in, the misses' portrait went black/blank (but still present).  I saved and reloaded, and now all 4 kids are normally represented, all is fine/normal.  So, saving and reloading fixes this, but it's still a bug.

I have no pic of the bug as I didn't take one before saving/reloading, my apologies.