I am experiencing and issue where the email username autofill does not always function when typing in the user name in the cc: field. It works consistently when logged in as a tech, however, it is unable to find certain users when logged in as a client. I have re-run the AD LDAP synch, but still have the issue, but only with certain client names. I am unable to correlate this with the client record or AD group membership.
Any help or clues would be appreciated.
Tech view showing that typing the user's first name creates the drop down with the account discovered:
Client view showing the same name typed in, but with no results: