When typesetting a bibliography \raggedright, biblatex seems to have trouble breaking a line between an author's first/last/middle names (and, if multiple authors are present, between two authors). It's as if the entire name list had been put into an \mbox.
Consider this example.

\documentclass[11pt,DIV=6]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage[style=authoryear]{biblatex}
\usepackage{filecontents}
\usepackage{tgschola}
\begin{filecontents}{bibtest.bib}
@COLLECTION{Star95,
editor = {Star, Susan Leigh},
year = {1995},
title = {Ecologies of Knowledge: Work and Politics in Science and Technology},
address = {Albany},
publisher = {SUNY}
}
@INCOLLECTION{Star95a,
author = {Star, Susan Leigh},
title = {The Politics of Formal Representations: Wizards, Gurus, and Organizational
Complexity},
year = {1995},
pages = {88-118},
crossref = {Star95}
}
\end{filecontents}
\renewcommand*{\bibsetup}{\raggedright}
\bibliography{bibtest.bib}
\listfiles
\begin{document}
\noindent\hrule
\nocite{Star95a}
\printbibliography
\noindent\hrule
\end{document}
»Susan Leigh« would easily fit into the fourth line, but instead her entire name is moved to the next one. It would seem odd to me that this should be biblatex's intended behavior, as it can have even worse results under certain circumstances. Can you reproduce this? What would be a way to change it? Should I contact the biblatex team?

\RaggedRightfrom\usepackage{ragged2e}– Marco Daniel Apr 05 '13 at 19:15\Raggedrightis what I've been using for years, and what I'm trying to get away from now, as I've decided I like my bibliographies better with no hyphenation at all (as opposed to a hyphenation that only occurs occasionally, but is often awkward). The problem described does not appear when hyphenation is allowed, which is why I didn't notice it until now. – Nils L Apr 05 '13 at 19:34