@carlybette The foals you create in CAS skip the newborn stage. Only bred foals need to learn to walk. This is what is supposed to happen, and you need to give them some time - maybe a couple days. If you hover on them, you'll see it says they're dazed. And if you ask what's wrong, it will give you a notification about being new to the world and dazed by how big it is and needing time to get used to it.
As a workaround for now, don't age them up - in CAS or anywhere else - until after that dazed moodlet wears off (after they start walking normally). Aging them up too early while still wobbly is what causes the walking on hind legs glitch.
I've already closed my game for tonight, but I'll try to test aging up a bred foal in CAS as soon as I get a chance to see if I can add a me-too to that.
