autofill error: enter a valid email address

Recently my N360 / Norton ID is resulting in a lot of "enter a valid email address" error messages when autofill tries to fill my log-in information. This is even though my correct email information is showing in the designated field for that particular site.  If I turn off autofill and enter the exact information manually (the info showing on the NID list of logins for that site), it is accepted and I can access my account.  Is there a solution for this issue?  It makes NID almost unusable and that is one of the reasons I stay with Norton. I use Windows 10 with Internet Explorer as my default browser.