Circumvent interaction between memoir and mdframed

Question

I noticed that when I use mdframed in a memoir document I'm not able to change the margin lengths of any frame defined from mdframed. This appears to happen regardless of the place where I try to set their lengths.

Here is a MWE showing the problem.

\documentclass{memoir}

\usepackage[framemethod=tikz]{mdframed}

\definecolor{creamy}{HTML}{e2bf40}
\colorlet{callout-bg}{creamy!50}

\newmdenv[backgroundcolor=callout-bg]{newframed}

\begin{document}
    \begin{newframed}[leftmargin=-10pt, rightmargin=10pt]
        The leftmargin is \the\mdflength{leftmargin}. The rightmargin is \the\mdflength{rightmargin}.
    \end{newframed}
\end{document}

Is there a way to circumvent this unwanted interaction?

Answer 1

The issue is independent of memoir (the same happens with book). As explained in section 6.7 of the mdframed documentation you need the innermargin and outermargin options in two-side documents (the default mode for both memoir and book). Or alternatively you can use the leftmargin and rightmargin options but with the addition of the usetwoside=false option.

MWE

\documentclass{memoir}

\usepackage[framemethod=tikz]{mdframed}

\definecolor{creamy}{HTML}{e2bf40}
\colorlet{callout-bg}{creamy!50}

\newmdenv[backgroundcolor=callout-bg]{newframed}

\begin{document}
    
\begin{newframed}[innermargin=-10pt,outermargin=10pt]
 The leftmargin is \the\mdflength{leftmargin}. 
 The rightmargin is \the\mdflength{rightmargin}.
\end{newframed}

\begin{newframed}[usetwoside=false,leftmargin=-10pt,rightmargin=10pt]
 The leftmargin is \the\mdflength{leftmargin}. 
 The rightmargin is \the\mdflength{rightmargin}.
\end{newframed}    

\end{document}