With syspref KohaAdminEmailAddress, I use: "The Library" <thelibrary@example.com> but the double quotes mess up the display of the syspref page. The app stores the value fine, but on retrieval it doesn't show. Workaround: The Library <thelibarary@example.com> might be valid and work with same result. The goal is to display a nice username instead of the raw email address. I suspect the template is using double quotes, so one might need to properly escape the field. This field is used as the From: mail address when sending notices is the branch details email is not set.
Still valid on current master. After entering something like "The Library" <thelibrary@example.com>, saving and refreshing the page, I get an empty field for KohaAdminEmailAddress, followed by some html snippet: Use [ ] " autocomplete="off" /> as the email address for the administrator of Koha.
Issue can be reproduced for more emails in system preferences: NoticeBcc, ReplytoDefault, PayPalUser...
*** This bug has been marked as a duplicate of bug 18727 ***