Third level of directories turn into files on Alt-Tab in Netrw tree view

[saccarosium]

Problem

In the tree view of Netrw, the directories at the third level of nesting are oftentimes turning into files after switching windows with Alt+Tab. (They aren't being rewritten with files, just look and behave like files.)

../
.config/                       <- First level, the current directory
| anthy/                       <- Second level, the directory inside of the current directory
| | imported_words_default.d/  <- Third level, the directory inside of directory of the current directory,
| | last-record2_default.utf8                                                     gets turned into a file
| | lock-file_default

This is what you get after Alt+Tab:

../
.config/                       <- First level, the current directory
| anthy/                       <- Second level, the directory inside of the current directory
| | imported_words_default.d  <- Third level, the directory inside of directory of the current directory,
| | last-record2_default.utf8                                      but looks like a file and doesn't open
| | lock-file_default

Steps to reproduce

1. Open Netrw
2. Open the tree view (press i multiple times)
3. Open up directories (Enter) to get to the third level of nesting
4. Alt+Tab, maybe a bunch of times, maybe quickly
5. See how the folder turned into a file

Expected behavior

Let the directories be themselves

Neovim version (nvim -v)

NVIM v0.9.2

Vim (not Nvim) behaves the same?

yes, 2:9.0.1927-1.fc38 (not on DEFAULTS — there's no Netrw that way, but on the clean install)

Operating system/version

Fedora 38

Terminal name/version

Gnome Console

$TERM environment variable

xterm-256color

Installation

DNF

original issue: neovim/neovim#25423