Crash when typing too soon

[stephen-huan]

Consider the following

\documentclass[11pt, oneside]{article}

\title{title}
\author{author}
\date{\today}

\begin{document}
\maketitle

testing % <-- type here

\end{document}

Open with neovim (nvim -n -i NONE -u NORC mwe.tex), then run :TeXpresso % and wait for the window to open. As soon as the window opens, start typing, then texpresso crashes. This is deterministic, as long as I start typing early enough.

No other plugins other than texpresso.vim.

strace: output.txt

P.S. found while trying to find a minimum working example for another bug related to freezes/crashes with an empty author (\author{}) and many packages loaded. Realized this issue was confounding my minimum working example.

System information

texpresso: 0e14b1d
texpresso.vim: let-def/texpresso.vim@1cc949f
neovim v0.10.2
Linux 6.6.66, NixOS 25.05 (Warbler)