words overlap in mathpazo

[teepeemm]

Something is strange with how mathpazo is initially setting the font. In the first line of output in

\DocumentMetadata
  {
    lang=en-US,
    pdfversion=2.0,
    pdfstandard=ua-2,
    testphase={phase-III,math,title,table,firstaid},
  }
\documentclass{article}
\usepackage{mathpazo}
\begin{document}
{\Large Some intro text}

{\tiny tiny text}

{\scriptsize scriptsize text}

{\footnotesize footnotesize text}

{\small small text}

{\normalsize Some normal size text}

{\large Some large text}

{\Large Some Large text}

{\LARGE Some LARGE text}

{\huge Some huge text}

{\Huge Some Huge text}
\end{document}

The words all overlap, as if each is in its own \makebox[0pt]. Once the font changes, the words are ok, but when that font is selected again, the words again overlap.

[davidcarlisle]

please attach your log.

With lualatex (and lualatex-dev) in tl2025 I get

LaTeX Font Warning: Font shape `TU/ppl/m/n' undefined
(Font)              using `TU/lmr/m/n' instead on input line 10.

and

[davidcarlisle]

Oh you used pdflatex, I can reproduce.

[davidcarlisle]

simplified version:

\DocumentMetadata
  {uncompress,
    testphase={phase-III},
  }
\documentclass{article}
\usepackage{mathpazo}
\showoutput
\begin{document}
{\Large 1Some intro text}

{\tiny 2tiny text}

{\scriptsize 3scriptsize text}

{\footnotesize 4footnotesize text}

{\small 5small text}

{\normalsize 6Some normal size text}

{\large 7Some large text}

{\Large 8Some Large text}

{\LARGE 9Some LARGE text}

{\huge aSome huge text}

{\Huge bSome Huge text}
\end{document}

[u-fischer]

An example without tagging:

\documentclass{article}
\usepackage{mathpazo}
\showoutput
\begin{document}%
\pdfinterwordspaceon

\Large 1Some intro text

\end{document}

with texlive 2024 this gives

So it looks like an engine bug. The question is why it is triggered by mathpazo.

[teepeemm]

I think this can be reduced to

\documentclass{article}
\renewcommand{\rmdefault}{ppl}
\showoutput
\begin{document}
\pdfinterwordspaceon

1Some intro text

\end{document}

which mathpazo.sty calls at line 48 (or 40 or 44, depending on package options).

[u-fischer]

@teepeemm I reported the issue to the pdftex some days ago maintainer. You can work around it by using the font at very small size first, e.g. in a shipout hook.