I tried again a few hours after my last comment and I was able to see the font options. However, the same problem happened to @jmtheman happened to me again. My site primary menu is being reverted to fallen back fonts which look horrible. Really hope you guys could come up with a new patch as soon as possible.
Came to say I had the same problem with OP but with greater severity. After succesfully changing typography in the “Customize” option from my view, my Menu got fallen-back to serif.
What’s worse, I came back to the menu and I found out that I couldn’t even choose the font.
Please kindly see my screenshot here to better understand my situation.
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