Am Wed, 30 Mar 2022 21:09:40 +0200 schrieb Michael Ring: > Dear all, > > when I run the following sample in XeLaTeX (TeX Live 2021) > > \documentclass{beamer} > \usetheme{Frankfurt} > \begin{document} > \begin{frame}{Test} > \begin{block}{test block} > \end{block} > \end{frame} > \end{document} > > it outputs the following warning messages: > > Missing character: There is no 4 ("34) in font nullfont! > Missing character: There is no 1 ("31) in font nullfont! > Missing character: There is no 0 ("30) in font nullfont! > Missing character: There is no 4 ("34) in font nullfont! > Missing character: There is no 4 ("34) in font nullfont! > > Is this a known bug and where does it come from? XeTeX? Beamer? PGF?
It is known: https://github.com/pgf-tikz/pgf/issues/1088 The next pgf version should correct it. -- Ulrike Fischer http://www.troubleshooting-tex.de/