Ubuntu 22.04 snap firefox doesn't save downloads to /mnt subfolders

[pnck]

When I try to download file or save page to hard disks mounted to /mnt download process doesn't start. However download to /media works as expected. Moreover another snap GIMP saves files to /mnt. Snap connection to removable-media is done.

pnck@ubuntupc:~$ lsb_release -rd
Description: Ubuntu 22.04 LTS
Release: 22.04

pnck@ubuntupc:~$ apt-cache policy firefox
firefox:
  Installed: (none)
  Candidate: 1:1snap1-0ubuntu2
  Version table:
     1:1snap1-0ubuntu2 500
        500 http://ru.archive.ubuntu.com/ubuntu jammy/main amd64 Packages

pnck@ubuntupc:~$ snap info firefox
name: firefox
summary: Mozilla Firefox web browser
publisher: Mozilla✓
store-url: https://snapcraft.io/firefox
license: unset
description: |
  Firefox is a powerful, extensible web browser with support for modern web application
  technologies.
commands:
  - firefox
snap-id: 3wdHCAVyZEmYsCMFDE9qt92UV8rC8Wdk
tracking: latest/stable/ubuntu-22.04
refresh-date: 2 days ago, at 19:34 MSK
channels:
  latest/stable: 99.0.1-1 2022-04-13 (1232) 163MB -
  latest/candidate: 100.0-2 2022-05-02 (1300) 168MB -
  latest/beta: 101.0b1-1 2022-05-03 (1306) 169MB -
  latest/edge: 102.0a1 2022-05-03 (1307) 180MB -
  esr/stable: 91.8.0esr-1 2022-04-05 (1184) 161MB -
  esr/candidate: 91.9.0esr-1 2022-04-27 (1284) 161MB -
  esr/beta: ↑
  esr/edge: ↑
installed: 99.0.1-1 (1232) 163MB -

pnck@ubuntupc:~$ snap connections firefox
Interface Plug Slot Notes
audio-playback firefox:audio-playback :audio-playback -
audio-record firefox:audio-record :audio-record -
avahi-observe firefox:avahi-observe :avahi-observe -
browser-support firefox:browser-sandbox :browser-support -
camera firefox:camera :camera -
content[gnome-3-38-2004] firefox:gnome-3-38-2004 gnome-3-38-2004:gnome-3-38-2004 -
content[gtk-3-themes] firefox:gtk-3-themes gtk-common-themes:gtk-3-themes -
content[icon-themes] firefox:icon-themes gtk-common-themes:icon-themes -
content[sound-themes] firefox:sound-themes gtk-common-themes:sound-themes -
cups-control firefox:cups-control :cups-control -
dbus - firefox:dbus-daemon -
desktop firefox:desktop :desktop -
desktop-legacy firefox:desktop-legacy :desktop-legacy -
gsettings firefox:gsettings :gsettings -
hardware-observe firefox:hardware-observe :hardware-observe -
home firefox:home :home -
joystick firefox:joystick :joystick -
mpris - firefox:mpris -
network firefox:network :network -
network-observe firefox:network-observe - -
opengl firefox:opengl :opengl -
personal-files firefox:dot-mozilla-firefox :personal-files -
removable-media firefox:removable-media :removable-media -
screen-inhibit-control firefox:screen-inhibit-control :screen-inhibit-control -
system-files firefox:etc-firefox-policies :system-files -
system-packages-doc firefox:system-packages-doc :system-packages-doc -
u2f-devices firefox:u2f-devices :u2f-devices -
unity7 firefox:unity7 :unity7 -
upower-observe firefox:upower-observe :upower-observe -
wayland firefox:wayland :wayland -
x11 firefox:x11 :x11 -

pnck@ubuntupc:~$ ls -la /mnt/
total 16
drwxr-xr-x 4 root root 4096 May 1 20:00 .
drwxr-xr-x 20 root root 4096 May 1 19:36 ..
drwxr-xr-x 11 pnck pnck 4096 May 3 13:33 Data
drwxrwxr-x 8 pnck pnck 4096 Jun 5 2021 VMs

pnck@ubuntupc:~$ mount | grep -e firefox -e mnt -e gimp
/var/lib/snapd/snaps/firefox_1232.snap on /snap/firefox/1232 type squashfs (ro,nodev,relatime,errors=continue,x-gdu.hide)
/var/lib/snapd/snaps/gimp_383.snap on /snap/gimp/383 type squashfs (ro,nodev,relatime,errors=continue,x-gdu.hide)
/dev/sda1 on /mnt/VMs type ext4 (rw,nosuid,nodev,relatime,uhelper=udisks)
/dev/mapper/data_vg-data_lv on /mnt/Data type ext4 (rw,nosuid,nodev,relatime,uhelper=udisks)
nsfs on /run/snapd/ns/snapd-desktop-integration.mnt type nsfs (rw)
nsfs on /run/snapd/ns/snap-store.mnt type nsfs (rw)
nsfs on /run/snapd/ns/firefox.mnt type nsfs (rw)
nsfs on /run/snapd/ns/gimp.mnt type nsfs (rw)

[Erich Eickmeyer (eeickmeyer)]

Thank you for taking the time to report this bug and help make Ubuntu better. Firefox is provided by a snap published by Mozilla, and they may not be aware of this issue. Please contact them via https://support.mozilla.org/kb/file-bug-report-or-feature-request-mozilla and link the bug report here so it can be further tracked. Thank you!

[pnck (pnck)]

The status is incomplete. Should i add some more information? The mozilla bug is https://bugzilla.mozilla.org/show_bug.cgi?id=1767868

[Paul White (paulw2u)]

This bug hasn't expired due to the bug watch.

The upstream bug was closed as "RESOLVED FIXED" on 2022-06-24

Testing here with Ubuntu 22.04, Firefox 105.0.3 (snap) and a
USB drive mounted to /mnt and not /media I'm not seeing the
issue as described in the bug description.

pnck, do you still see the problem that you reported five months
ago? If not, can this bug report now be closed?

[Paul White (paulw2u)]

The bug reporter hasn't responded in over six weeks and the bug
report won't expire due to the bug watch

Further to comments #3 and #4 I'm closing this as being fixed.

@pnck, if this is still an issue then please comment here. As the
bug reporter you should be able to revert the status of the bug
report back to 'New'. Any comments will be seen by the relevant
members of the Ubuntu Desktop team who will advise further.