Why does my "tab" key no longer cycle out of the "TO" area? Outlook Live Web Browser

Update: I found the workaround for her. Maybe it will help other JAWS people until this is fixed. Do not put the recipient's name in first. Use the tab to go first to the subject and type your message in the body. Then use the following Shift/Tab to return to the To line and type in the recipient. Ctrl+Enter to send.

I also assist a blind client with JAWS.  How do you get the JAWS field list?  I can't find anything on that, and she can no longer communicate with her family because of this issue.   
  
When she was forced to change from Winmail, which worked so wonderfully, to this Outlook nightmare, then this happens.  Accessibility is complicated enough without constantly having issues.

No that doesn't work For clarity try this and see how far you get.

Just using the keyboard and not a mouse in OWA or Outlook on the web.

1. Compose a new email.
2. You are put in the TO: field. Enter an email address, don't just tab past.
3. Now try to use the TAB key to get to the Subject Field.

You should be stuck there. You can SHIFT + TAB out, but that it is. There is no way to get to the subject field or message area unless you use a mouse to click in the Subject field or have a screen reader like JAWS where you can bring up the FIELDS links list and navigate to the "Subject edit" link.

Had the same issue with tab key not progressing from TO to CC in Outlook after Windows 11 update.
I found this fix online and it worked for me. It's weird but it did it. I performed the following while having a blank new Outlook message opened.

1. Press the Alt key twice, then see if the Tab key restarts to work.
2. Press and hold the Altkey, then press the 0,0, and 9 number keys on your keyboard, and release the keys.
3. Press the Ctrl key twice, and try Tab to see if it works.
4. Press the Windows logo keytwice, and see if it fixes your problem.

source: \[SOLVED\] Tab key Not Working on Windows - Driver Easy

UPDATE:

Spoke to Soon...I tested with Contacts inside my organization and the tab key works fine for them. Contacts outside my organization in the TO or CC makes the tab key just highlight the CONTACT that is outside my organization. It wouldn't be a Windows update if there wasn't something weird like this. :-(

Me too. I'm not using web version and I'm having this same problem using multiple computer laptops. Same problem at the office or at the home computer.

Also here to confirm I'm experiencing this on desktop version. "New Outlook" on Win 11. Definitely just started happening to me today, I noticed immediately.

This is the exact same problem I am experiencing. Once I enter a self-populate address and hit the tab key to enter another name, it just stays on the original name. I can use my mouse to click outside the To box and tab key works normal.