Just checked. Not fixed for me.
I had the same issue and for me what worked was adding a mobile number to my account.
So initially I had the following = The 'Save' button did not show
Then I had the following = The 'Save' button did not show (even though authentication came through via the Auth App instead of email this time)
- Secondary email
- Authentication App
Then finally I had the following = The 'Save' button showed! Yay! And the authentication still came through via the Auth App so nothing actually came through my mobile via text
- Mobile (text a code)
- Authentication App
I tried to follow these instructions and changed some of my security settings. Adding a mobile number, changing login mehtods and 2FA. Didn't appear to work immediately so removed the phone number.
Logged into my live.co.uk email account today and the save button has magically appeared so whatever I tinkered with worked and I can now save a change to forwarding address.
Thanks