Created attachment 221400 [details]
See firstname.lastname@example.org author in the attached screenshot. This is a temporary account that gets replaced in the repository in a few moments. Future requests to timeline RSS give the correct author.
But the dashboard doesn't re-parse old elements in Trac XML, so it never gets the update if it happened to fetch a bug in this intermediate state.
Committed r172747: <http://trac.webkit.org/changeset/172747> with a fix for bug 127130.