Entities do not face the eyes or feet when specified to do so using the /tp <target> <location> facing entity <target> <eyes/feet>. Instead, they see a bit up than the intended location.
Enderman facing eyes:
[media]
Enderman facing feet:
[media]
MC-127170
Entities do not face eyes or feet
Resolved
Invalid
0
You need to use
anchoredin/executeto determine which part of the enderman should be facing you.