Public bug reported:
Summary
On Ubuntu 26.04 (Resolute), the AppArmor profile torbrowser_firefox
prevents Tor Browser from opening the "Save As" dialog when downloading
files.
Instead of opening the dialog, Tor Browser crashes with a GTK assertion
failure followed by a segmentation fault.
Switching the profile to complain mode immediately fixes the problem.
Environment
Ubuntu 26.04 LTS (Resolute)
AppArmor 5.0.0~beta1-0ubuntu7
Tor Browser Launcher 0.3.9-1build1
GTK 4.22.4
glycin-loaders 2.1.1
Steps to reproduce
Install Tor Browser using torbrowser-launcher.
Keep AppArmor profile in enforce mode.
Open Tor Browser.
Attempt to download any file.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: apparmor 5.0.0~beta1-0ubuntu7
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 16 13:37:45 2026
InstallationDate: Installed on 2026-07-13 (3 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
ProcEnviron:
LANG=pt_BR.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcKernelCmdline: BOOT_IMAGE=/vmlinuz-7.0.0-27-generic
root=UUID=540809cf-f48d-40e6-99b1-606f03adb9fc ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: apparmor
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
** Summary changed:
- Ubuntu 26.04 AppArmor prevents Tor Browser opening Save as dialog boxthe
+ Ubuntu 26.04 AppArmor prevents Tor Browser opening Save as dialog box
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https://bugs.launchpad.net/bugs/2161003
Title:
Ubuntu 26.04 AppArmor prevents Tor Browser opening Save as dialog box
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