Different font size with pdflatex from pretest

[Sam Carter]

Hi,

In the following example, I get different font sizes for "foo" and "bar" if compiled with pdflatex from the 2025 pretest. Both words are displayed in the same size with lualatex/xelatex from TL2025 or pdflatex/lualatex/xelatex from TL2024.

\documentclass{beamer}

\usepackage{tabularray}

\begin{document}

\begin{frame}
  \scriptsize
  \begin{longtblr}[]{}
    foo\TblrNote{*} & bar \\
  \end{longtblr}
\end{frame}

\end{document}

Result: https://raw.githubusercontent.com/samcarter/shared/refs/heads/main/document-1.png

Any idea what might be causing this?

Cheers,
S