Comment 0 for bug 2065708

Ubuntu Budgie 24.04
budgie-control-center 1.4.0-2build3

When trying to select a custom wallpaper to add to the Backgrounds page of Budgie Control Center, the "Add Picture" button will open a dialog to select an image file. However, there will be no thumbnail of the image displayed in this dialog, the "Open" button will remain insensitive, and double-clicking the file name will have no effect. The only option is to cancel out of the dialog.

Steps to reproduce:

On Ubuntu Budgie Noble / Oracular:
 - open Budgie Control Center
 - Navigate to the Backgrounds page and click the "Add Picture" button in the top right title bar.
 - When the file chooser dialog opens, select an image file.

What I would expect to happen:

I would expect the thumbnail to update in the lower right, and the "Open" button to become enabled.

What happened instead:

The "Open" button remains disabled, and the thumbnail is shown as a "?".

Additional information:

This is due to AppArmor changes preventing certain apps doing deemed security related issues in userspace.
Running budgie-control-center from the terminal illustrates the issue with thumbnails with the following output:
(budgie-control-center:38170): cc-background-chooser-WARNING **: 12:37:31.144: could not general thumbnail file:///home/sam/Pictures/flavors/Flavor-Ubuntu-Budgie.png (image/png) Child process exited with code 1

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: budgie-control-center 1.4.0-2build3
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: Budgie:GNOME
Date: Tue May 14 12:38:19 2024
InstallationDate: Installed on 2024-05-08 (6 days ago)
InstallationMedia: Ubuntu-Budgie 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
SourcePackage: budgie-control-center
UpgradeStatus: No upgrade log present (probably fresh install)