Also getting the blank box in the desert, and definitely not an old save, since I deleted all of my saves when I updated to 1.5.4. Also getting the "Venus gives Inanna scene" but with Inanna children as well.
One more thing... I kinda don't want to mention it because it's an easy way to get the children I want, but it's still a bug, so I figure I'd better. If you go into a menu from the side bar (inventory, blessings, etc.) while a "This Matriarch gave birth" screen is up for a HUMAN matriarch, you will not only receive the child that was there when you went to the menu, but you'll get another one after you leave it... for as many times as you want. If you do this with a creature matriarch, it only changes the image for the child, it doesn't give multiple children.
I've used that last bug mostly as a way to make up for time lost in games when I get human matriarchs that refuse to get pregnant so I have to restart.