padlock icon is missing sometimes

[realPerson921]

The directory icon modifier which is the padlock is missing from a child directory after a recursive "read-only" chmod on a parent directory.

This bug has been around for years.

Full description at...
https://askubuntu.com/questions/1462795/padlock-on-directory-icons-may-be-missing

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nautilus 1:3.36.3-0ubuntu1.20.04.2
ProcVersionSignature: Ubuntu 5.15.0-69.76~20.04.1-generic 5.15.87
Uname: Linux 5.15.0-69-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.26
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 18 05:38:36 2023
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'initial-size' b'(1080, 749)'
 b'org.gnome.nautilus.preferences' b'show-image-thumbnails' b"'never'"
 b'org.gnome.nautilus.preferences' b'default-folder-viewer' b"'list-view'"
 b'org.gnome.nautilus.list-view' b'default-visible-columns' b"['name', 'size', 'date_modified', 'date_modified_with_time', 'starred']"
 b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size', 'type', 'owner', 'group', 'permissions', 'where', 'date_modified', 'date_modified_with_time', 'date_accessed', 'recency', 'starred', 'detailed_type']"
InstallationDate: Installed on 2022-08-27 (233 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_nautilus:

[realPerson921 (brian-lim-ca)]

Here is a reason you might want to rank this bug higher than the current "low" rank.

People may navigate into read-only data via links or favourites or the "back" navigation so it might not be apparent what is read-only. It is conceivable that not all applications indicate read-only data, or indicate it in a prominent way for visually impaired people or tired people who are not visually impaired, so the user might waste some time modifying it. Even though saving to a different place preserves work, it's annoying and annoyance is disruptive to work.

They might want to make changes to a similar or identical file elsewhere so padlocks should be visible on all directories that should have them. That way the user knows as early as possible to direct his attention elsewhere.