We have a standard SharePoint 2013 list that contains several columns. One of the columns is your typical People Picker column. Let's call it the Employee Name column
When we send out an email via a workflow that was designed in SharePoint Designer, in some cases the user who was picked in the Employee Name column does not show up correctly as a lookup in the body of the email message.
For example, if my username in Active Directory is JDOE and there is another employee in AD with a username of JDOE2. If JDOE was selected in the Employee Name column the email being fired off via workflow may actually show JDOE2's information inside the body of the email where I selected Current Item:Employee Name -> Display Name. Almost acting like SharePoint Designer is grabbing the wrong account behind the scenes. This is almost always occurring when similar usernames in AD are found. If we have a username of DOMAIN\billy and another account called DOMAIN\billingservices for another example. You might see the Billing Services information instead of Billy's information even though Billy's name is in the actual list item.
I hope I am making sense. Any insight or help is welcome here as we have several employees with similar AD usernames causing this confusing issue.