When adding, and subsequently editing a contact from within an email message, the contact information will not save.
Clicking Add as shown in the image above, opens the contact in a new window. There is no issue editing any of the fields, however when "save" is clicked, we get the "spinny blue circle"
All users in an account I administer are having this issue. I have reproduced this issue on multiple user accounts, on different computers, on different versions of Windows and multiple browsers.
When adding a new contact from within the "people" section, this issue does not occur. The users would like to simply add a person who they have received an email from as a new contact, rather than have to create from scratch via the "people" section.
I do have an open Service Request on this issue if anyone from MS would like to look into it, but I have not seen any activity on it just yet.