Math rendering doesn't seem to work on Emacs 29

[pwrobinson]

I created a (single-file) LaTeX project with the example code:

\documentclass{article}
\usepackage{amsmath}
\begin{document}
An example equation is
\begin{equation*}
\frac{\partial \mathcal{L}}{\partial q} - \frac{d}{dt}\frac{\partial \mathcal{L}}{\partial \dot{q}} = 0.
\end{equation*}
The document continues.
\end{document}

While xen-mode works, the math rendering of the equation does not. The message is
"image generation task in progress".

I'm running Emacs 29.0.60. xenops-doctor doesn't show any problems.

[WJC5197]

the same for me, emacs 29.0.92

[WJC5197]

seem like pure gtk's problem