2 Edwardsbot messages, the second didn't use a 4tilde signature
Any "new talkpage message" currently requires a 4tilde sig, otherwise the section-link and auto-excerpt-edit-summary will not appear in any Notifications (flyout/email).
The screenshot is referring to the two messages visible here: https://en.wikipedia.org/w/index.php?title=User_talk:Quiddity&oldid=580865248#The_Signpost:_06_November_2013
The November 8 message ("Wikidata weekly summary #83") ends with "Global message delivery 21:50, 8 November 2013 (UTC)" which is not a 4tilde signature. The Notifications (flyout/specialpage/email) all fail to link to the specific section in the talkpage, and all fail to provide an excerpt/auto-summary.
The November 9 message ("The Signpost: 06 November 2013") appears to be signed with a 4tilde sig, and it correctly gives section-links and edit-summary.
An unsigned, "new section", test-message on your userpage (from an account not-your-own) will reproduce this bug.