[XeTeX] "Missing character" warnings in beamer

[Michael Ring]

Am 01.04.22 um 11:22 schrieb Ulrike Fischer:
> 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.
>
>

Perfect, thanks Ulrike!