Phantom text left behind after deleting an entire line

[stephen-huan]

Easiest to replicate with a "large" document, I'll provide a concrete example later. Add a \newpage and start typing a line, say, "hello world". Delete the "world" (in neovim, with diw, say) and it updates as expected. But delete the entire line with dd and "hello world" will still be shown in the viewer. Spaces, tabs, and newlines can be added without updating the text shown in the viewer. But as soon as an alphabetical character is added, the viewer updates instantly to that character. Alternatively, scrolling the cursor to the \newpage will update the viewer to the previous page.

The smallest document I could find which exhibits this behavior is as follows. I don't think the particular imports are important. If you can't replicate with this document, try a larger one with more package imports, it seems to help.

\documentclass[11pt, oneside]{article}
\usepackage{fontspec}
\usepackage[english]{babel}
\usepackage[babel=true]{microtype}
\usepackage{geometry}
\usepackage{hyperref}
\geometry{a4paper}

\begin{document}
\maketitle

\newpage

hello world

\end{document}

The smaller document doesn't exhibit the issue. Instead, deleting the line "hello world" instantly updates the viewer to the title page (make sure to wait a bit and deleting "world" updates before deleting the line to avoid issues like #79).

\documentclass{article}

\begin{document}
\maketitle

\newpage

hello world

\end{document}

System information

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