I've noticed BibLaTeX keeps putting linebreaks between authors initials and the last name. I would prefer these to stay together. When I do journal names I can manually specify J.~App.~Cryst. but since the author names are automatically formatted, that isn't something I can do.
Examples drawn from biblatex-examples.bib (Showing it happens with authors, editors, and translators, though in my document authors are the main problem. I would like to keep the text justified if possible.)
\documentclass{article}
\usepackage[style=chem-rsc]{biblatex}
\addbibresource{biblatex-examples.bib}
\begin{document}
How do I get BibLaTeX to stop putting the last name on the next line?\autocite{set,aristotle:physics,cicero}
\printbibliography
\end{document}


\sloppyto avoid overfull lines. (If anything follows the bibliography, restore\fussy. See https://tex.stackexchange.com/q/241344 for some discussion that subject.) – barbara beeton Oct 17 '20 at 14:40