Perhaps it’s tied to the back-end mechanics, but I noticed when creating a Wizard in the character builder that there is no option for a “Universalist” under Arcane School. Just FYI!
Never mind: it’s there, I just had the browser window too “skinny” for it to show up. Once I expanded the window, the list appeared properly.
That said, now when I try to choose an Arcane School (any of them), it doesn’t register in the builder has having been selected.
Thanks for reporting this. We’re looking into what’s causing that issue with the Arcane Schools.