Stock e-mail client (Nexus 4) not synchronizing to IMAP SSL account since 4.2.2 update

I have my school's e-mail account being checked via IMAP SSL/TLS on port 993. It is an Exchange mailbox but I did not want to to use MAPI and have my device "managed" by the school. Anyhow, this worked fine prior to 4.2.2 update. Ever since then, e-mail is not being synchronized automatically and requires me to manually press the synchronize button. My testing: 1. Send test e-mail to self from another account 2. Set checking frequency to 5 minutes 3. Wait 10 minutes (just to pad a bit) Still nothing. If I go to the client and manually hit refresh though, I do get the message pulled. Also, if I restart the phone, all the new messages get pulled as well. Things I've checked: - **Factory reset**: Reluctantly did one yesterday but, unfortunately, did not fix the issue. - **System Settings -> Accounts -> Email**: The synchronize button icon is green, when I click on the account, "Email" setting is checked. Says "Last synced" with a time that's over 5 minutes ago. - **System Settings -> Data Usage -> Menu -> Auto-Sync Data**: Saw that this was the issue with many people. That, however, is checked for me. - **Wifi vs. Mobile Data**: I've tested on both and no difference in results. Does anyone have any suggestions on things I should check or test to figure this out.