Last name of app contact is in lower case.
"Charles deltel" should be "Charles Deltel".
After inspection, the name displayed is the output of email2name(webapp.contact).
In case of email, the function is called another time on what seems to be the correct output.
email2name("charles.deltel@inria.fr")
-> email2name("charles deltel".title())
-> return "Charles Deltel".capitalize()"
The second call seems unrelevant.