Remove locally overfull \hbox warning in beamer frametitle

beamerbeamer-metropolismarginswarnings

I am preparing some slides for a lab meeting, and I am using mainly beamer/metropolis.
I need to add a logo at top right corner of the frametitle to fit my lab standards.
So I used the command \addtobeamertemplate{frametitle}.

But to fit with the corner I have to overfull margins. And since it is on every slide it yields a large number of warnings.
For example, here is a MWE:

\RequirePackage[l2tabu, orthodox]{nag}
\documentclass[aspectratio=169, 10pt]{beamer}

    \usetheme{metropolis}
    \metroset{numbering=fraction,}
    \addtobeamertemplate{frametitle}{}{\vspace*{-1.5em}\hspace*{+0.86\paperwidth}LOGO}
    
\begin{document}        
    \begin{frame}
        \frametitle{title of an empty frame}
        
        empty.
    \end{frame}
\end{document}

which gives me the following warning:

Overfull \hbox (28.00511pt too wide) in paragraph at lines 12--12

I would like to suppress (or resolve) these warning and keeping the warning if I have other overfull occurring.
Of course, a good manner to handle this would be to reduce the hspace to \hspace*{+0.79\paperwidth} but the result is too far from what I need to obtained.

So it there a way to remove this warnings only locally (or solve them but I don't think so) ?

Best Answer

As far as I can tell you want to flush right but overlapping a fixed amount (25pt) past the allowed space. Using \fill rather than a fixed left margin allows it to easily adapt to different length texts.

enter image description here

\RequirePackage[l2tabu, orthodox]{nag}
\documentclass[aspectratio=169, 10pt]{beamer}

    \usetheme{metropolis}
    \metroset{numbering=fraction,}
    \addtobeamertemplate{frametitle}{}{\vspace*{-1.5em}\hspace*{\fill}LLLLOGO\hspace{-25pt}\mbox{}}
    
\begin{document}        
    \begin{frame}
        \frametitle{title of an empty frame}
        
        empty.
    \end{frame}
\end{document}
Related Question