can't open a thunderbird attachment in the firefox snap

[Imre Péntek]

steps to reproduce:
1. doubleclick on a html attachment in thunderbird.
2. a dialog box shows asking whether you want to save it or open it
3. select opening with firefox

actual result:
firefox opens saying file not found

desired result:
firefox opens displaying the attachment

(most probably snap related issue)

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: thunderbird 1:91.8.0+build2-0ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: imi 1640 F.... pulseaudio
 /dev/snd/controlC1: imi 1640 F.... pulseaudio
 /dev/snd/pcmC1D0p: imi 1640 F...m pulseaudio
BuildID: 20220401203107
CasperMD5CheckResult: pass
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 27 13:09:04 2022
DefaultProfileExtensions: extensions.sqlite corrupt or missing
DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
DefaultProfileLocales: extensions.sqlite corrupt or missing
DefaultProfilePrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/thunderbird/omni.ja:greprefs.js:359
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
InstallationDate: Installed on 2022-04-24 (2 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
IpRoute:
 default via 192.168.0.1 dev enx3c18a0702516 proto dhcp metric 100
 169.254.0.0/16 dev enx3c18a0702516 scope link metric 1000
 192.168.0.0/24 dev enx3c18a0702516 proto kernel scope link src 192.168.0.22 metric 100
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=hu_HU.UTF-8
 SHELL=/bin/bash
Profile0Extensions: extensions.sqlite corrupt or missing
Profile0IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile0Locales: extensions.sqlite corrupt or missing
Profile0PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/thunderbird/omni.ja:greprefs.js:359
Profile0PrefSources: prefs.js
Profile0Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile1 (Default) - LastVersion=None/None (Out of date)
 Profile0 - LastVersion=91.8.0/20220401203107 (In use)
RunningIncompatibleAddons: False
SourcePackage: thunderbird
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/03/2019
dmi.bios.release: 15.49
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F.49
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 827E
dmi.board.vendor: HP
dmi.board.version: 94.71
dmi.chassis.type: 31
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 94.71
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.49:bd05/03/2019:br15.49:efr94.71:svnHP:pnHPSpectrex360Convertible13-w0XX:pvr:rvnHP:rn827E:rvr94.71:cvnHP:ct31:cvrChassisVersion:skuZ9E46EA#ABV:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=SPT
dmi.product.name: HP Spectre x360 Convertible 13-w0XX
dmi.product.sku: Z9E46EA#ABV
dmi.sys.vendor: HP

[Imre Péntek (pentek-imre)]

same thing happens with a html file in your tmp and then typing
$ firefox /tmp/myfile.html

[Imre Péntek (pentek-imre)]

for thunderbird it's clearly a usability issue, when a user clicks to open it in firefox, (s)he's right to expect the given attachment to be opened in firefox

[Sebastien Bacher (seb128)]

Thank you for your bug report. That sounds like an issue with the firefox snap, opening a file in /tmp from a fileselector correctly works using the desktop portals but using a command line argument gives an error which is probably because it's trying to directly read from /tmp which is a private directory in the snap context