File Association With Files in tempdir broken

[joe mcverry]

The bug has something to do with the file associations and files in the tempdir directory. It started right after I upgraded from Ubuntu 21.04 to 21.10.

I have PDF files associated with Firefox. When I double-click them from, say, Thunderbird (my mail program), the file should automatically be loaded and displayed by Firefox. Firefox will load the file into the tempdir, a subdirectory in the /tmp directory. Which the program does, but when it tries to open the file Firefox reports that it can't find the file. This error also occurs when a drag-and-drop operation is used from the same directory. The error does not occur if the File->Open operation is used in Firefox.

If the file is in one of my directories and I double-click the file icon, Firefox opens the file without a problem.

So the association breaks if the file is in the tempdir directory or for this case /tmp/pid-15374

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: ubuntu-release-upgrader-core 1:21.10.9
ProcVersionSignature: Ubuntu 5.13.0-40.45-generic 5.13.19
Uname: Linux 5.13.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu71.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 29 08:02:26 2022
InstallationDate: Installed on 2019-08-14 (988 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to impish on 2022-04-23 (5 days ago)
VarLogDistupgradeTermlog: