I saw one person who expired that did a Self Check, but like myself the 'credit bureau' identity test prevents for the check to be performed.
Anyone else who expired do the check to see if youre still authorized to work?
My theory is that you still have Work Authorization, but USCIS is not telling you.

Worth a try.
https://www.uscis.gov/mye-verify/self-check

I can't verify, unless it's ran by my HR, but they are letting me work through this process. Would be worth a shot for those who went on leave or are using PTO.