[Bug 1989676] [NEW] Save As dialog cannot receive focus

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How to reproduce:
1. Open firefox
2. Ctrl+s

Expected behavior:
The "Save As" dialog opens. I can edit the file name, click on the left-side menu to change directory, click on the save button, close the dialog.

Bug:
The "Save As" dialog box is open. The "on mouse over" events work (elements are highlighted when the mouse is over) but clicking on any element has no effect. I cannot edit the filename, save the document, close the dialog box, ...
I can click on the "+" button of the main window and open a new tab, but the dialog box stays on top. When I have a tab open that plays a video or some music, the playing doesn't stop. Firefox doesn't seem to freeze, it just keeps this dialog box open on top.
I have to pkill firefox.

Additional information:
`wmctrl -l` lists multiple "Save as" windows.

My computer:
Dell XPS 15

My system:
$ lsb_release -rd
Description:	Ubuntu 22.04.1 LTS
Release:	22.04

$ firefox --version
Mozilla Firefox 104.0.2

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

$ snap list
Name                       Version           Rev    Tracking         Publisher     Notes
bare                       1.0               5      latest/stable    canonical✓    base
chromium                   105.0.5195.52     2076   latest/stable    canonical✓    -
code                       e7f30e38          107    latest/stable    vscode✓       classic
core                       16-2.57.1         13741  latest/stable    canonical✓    core
core18                     20220831          2566   latest/stable    canonical✓    base
core20                     20220826          1623   latest/stable    canonical✓    base
firefox                    104.0.2-1         1810   latest/stable/…  mozilla✓      -
gnome-3-38-2004            0+git.891e5bc     115    latest/stable/…  canonical✓    -
gtk-common-themes          0.1-81-g442e511   1535   latest/stable/…  canonical✓    -
helm                       3.7.0             353    latest/stable    snapcrafters  classic
snap-store                 41.3-63-gbd822db  592    latest/stable/…  canonical✓    -
snapd                      2.57.1            16778  latest/stable    canonical✓    snapd
snapd-desktop-integration  0.1               14     latest/stable/…  canonical✓    -

$ snap info firefox
name:      firefox
summary:   Mozilla Firefox web browser
publisher: Mozilla✓
store-url: https://snapcraft.io/firefox
contact:   https://support.mozilla.org/kb/file-bug-report-or-feature-request-mozilla
license:   unset
description: |
  Firefox is a powerful, extensible web browser with support for modern web application
  technologies.
commands:
  - firefox
  - firefox.geckodriver
snap-id:      3wdHCAVyZEmYsCMFDE9qt92UV8rC8Wdk
tracking:     latest/stable/ubuntu-22.04
refresh-date: 8 days ago, at 00:27 CEST
channels:
  latest/stable:    104.0.2-1    2022-09-06 (1810) 185MB -
  latest/candidate: 105.0-1      2022-09-13 (1842) 187MB -
  latest/beta:      105.0b9-1    2022-09-12 (1836) 187MB -
  latest/edge:      106.0a1      2022-09-14 (1845) 192MB -
  esr/stable:       91.13.0esr-1 2022-09-02 (1791) 161MB -
  esr/candidate:    102.3.0esr-1 2022-09-12 (1839) 183MB -
  esr/beta:         ↑                                    
  esr/edge:         102.2.0esr-2 2022-09-02 (1793) 182MB -
installed:          104.0.2-1               (1810) 185MB -

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: evince 42.3-0ubuntu2
ProcVersionSignature: Ubuntu 5.15.0-47.51-generic 5.15.46
Uname: Linux 5.15.0-47-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 15 09:16:40 2022
InstallationDate: Installed on 2022-06-30 (76 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
SourcePackage: evince
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy wayland-session
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Save As dialog cannot receive focus
https://bugs.launchpad.net/bugs/1989676
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