foreignblockquote across pages fails with documentclass memoir

[jmague]

When using foreinblockquote from csquotes with the class memoir, if the quote spreads across pages, the document won't compile but will fail with the message "Missing } inserted."

The following minimal example illustrates the problem :

\documentclass{memoir}

\usepackage{polyglossia}
\setdefaultlanguage{english}
\setotherlanguage{latin}

\usepackage{lipsum} 

\usepackage{csquotes}

\begin{document}

\foreignblockquote{latin}{\lipsum[1-5]}

%The following would work as four paragraphs fit on a single page
%\foreignblockquote{latin}{\lipsum[1-4]}

\end{document}

[moewew]

This appears to be related to https://github.com/josephwright/csquotes/issues/56.