JS ERROR: TypeError: can't access property "get_parent", clone is undefined

[workpush]

Describe the bug
When opening an application in my case flatpak application of librewolf, gnome logs out and all windows are closed on login.

To Reproduce
Unfortunately this seems to happen not all the time for librewolf. But this also seems sometime happen sometimes for email links, which should open in latest flatpak of Thunderbird

1. click on librewolf application in dock menu
2. See error log

Expected behavior
Gnome session should not get closed.

** Error log **

journalctl _UID=${UID} --since "5 min ago"

Jan 21 16:19:14 maschine systemd[3686]: Started app-gnome-io.gitlab.librewolf\x2dcommunity-153362.scope - Application launched by gnome-shell.
Jan 21 16:19:14 maschine systemd[3686]: Started app-flatpak-io.gitlab.librewolf\x2dcommunity-2502673770.scope.
Jan 21 16:19:14 maschine io.gitlab.librewolf-community.desktop[153379]: [2] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
Jan 21 16:19:15 maschine gnome-shell[4144]: JS ERROR: TypeError: can't access property "get_parent", clone is undefined
                                          isWindowAnimating@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4795:5
                                          insertWindow@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4150:26
                                          add_handler@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:3984:21
                                          init/<@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:411:88
                                          _moveWindow@file:///var/home/user/.local/share/gnome-shell/extensions/auto-move-windows@gnome-shell-extensions.gcampax.github.com/extension.js:77:16
                                          _appWindowsChanged/<@file:///var/home/user/.local/share/gnome-shell/extensions/auto-move-windows@gnome-shell-extensions.gcampax.github.com/extension.js:94:18
                                          _appWindowsChanged@file:///var/home/user/.local/share/gnome-shell/extensions/auto-move-windows@gnome-shell-extensions.gcampax.github.com/extension.js:93:56
                                          @resource:///org/gnome/shell/ui/init.js:21:20
Jan 21 16:19:15 maschine gnome-shell[4144]: **
Jan 21 16:19:15 maschine gnome-shell[4144]: libmutter:ERROR:../src/compositor/compositor.c:473:invalidate_top_window_actor_for_views: assertion failed: (!priv->frame_in_progress)
Jan 21 16:19:15 maschine gnome-shell[4144]: Bail out! libmutter:ERROR:../src/compositor/compositor.c:473:invalidate_top_window_actor_for_views: assertion failed: (!priv->frame_in_progress)
Jan 21 16:19:15 maschine gnome-shell[4144]: == Stack trace for context 0x563fdc374080 ==
Jan 21 16:19:15 maschine gnome-shell[4144]: #0   7fff5de05b40 b   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4708 (13a914769650 @ 10)
Jan 21 16:19:15 maschine gnome-shell[4144]: #1   7fff5de060e0 I   self-hosted:157 (f84d88bdba0 @ 246)
Jan 21 16:19:15 maschine gnome-shell[4144]: #2   563fdc43f720 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4708 (13a914769560 @ 1197)
Jan 21 16:19:15 maschine gnome-shell[4144]: #3   563fdc43f610 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4215 (13a914768bf0 @ 3299)
Jan 21 16:19:15 maschine gnome-shell[4144]: #4   563fdc43f578 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:3338 (13a914766b50 @ 37)
Jan 21 16:19:15 maschine gnome-shell[4144]: #5   563fdc43f4c8 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/utils.js:522 (13a9147edec0 @ 160)
Jan 21 16:19:15 maschine gnome-shell[4144]: #6   563fdc43f438 i   resource:///org/gnome/shell/ui/init.js:21 (f84d888d8d0 @ 48)
Jan 21 16:19:15 maschine audit[4144]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=4144 comm="gnome-shell" exe="/usr/bin/gnome-shell" sig=6 res=1

System information:

$ ./gather-system-info.sh
Please include this information in your bug report on GitHub!
Distribution: Bluefin
GNOME Shell 49.2
Display server: Wayland
Enabled extensions:
- paperwm@paperwm.github.com
- auto-move-windows@gnome-shell-extensions.gcampax.github.com
- workspace-indicator@gnome-shell-extensions.gcampax.github.com
- switcher@landau.fi
- Resource_Monitor@Ory0n
- just-perfection-desktop@just-perfection
- monitor-brightness-volume@ailin.nemui
- Bluetooth-Battery-Meter@maniacx.github.com
- tailscale-status@maxgallup.github.com
- quicksettings-audio-devices-renamer@marcinjahn.com
- appindicatorsupport@rgcjonas.gmail.com
- blur-my-shell@aunetx
- dash-to-dock@micxgx.gmail.com
- gsconnect@andyholmes.github.io
- logomenu@aryan_k

Additional context
Check also the additional extensions, especially auto-move-windows is also in the log.

[Thesola10]

A GNOME session forcefully closing usually indicates a crash, as shown in your error log. Could you try out the fix I just pushed?

git clone https://github.com/paperwm/PaperWM --branch fix/1130
cd PaperWM
make install

[workpush]

Thanks for the fast reply. I installed the branch.
Unfortunately Gnome is still crashing, but with a different error:

Jan 25 20:40:30 machine systemd[3806]: Started app-gnome-io.gitlab.librewolf\x2dcommunity-21303.scope - Application launched by gnome-shell.
Jan 25 20:40:30 machine systemd[3806]: Started app-flatpak-io.gitlab.librewolf\x2dcommunity-1097295006.scope.
Jan 25 20:40:30 machine io.gitlab.librewolf-community.desktop[21319]: [2] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
Jan 25 20:40:30 machine gnome-shell[4184]: JS ERROR: TypeError: can't access property "set_position", clone is undefined
                                          insertWindow@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4157:5
                                          add_handler@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:3984:21
                                          init/<@file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:411:88
                                          _moveWindow@file:///var/home/user/.local/share/gnome-shell/extensions/auto-move-windows@gnome-shell-extensions.gcampax.github.com/extension.js:77:16
                                          _appWindowsChanged/<@file:///var/home/user/.local/share/gnome-shell/extensions/auto-move-windows@gnome-shell-extensions.gcampax.github.com/extension.js:94:18
                                          _appWindowsChanged@file:///var/home/user/.local/share/gnome-shell/extensions/auto-move-windows@gnome-shell-extensions.gcampax.github.com/extension.js:93:56
                                          @resource:///org/gnome/shell/ui/init.js:21:20
Jan 25 20:40:30 machine gnome-shell[4184]: **
Jan 25 20:40:30 machine gnome-shell[4184]: libmutter:ERROR:../src/compositor/compositor.c:473:invalidate_top_window_actor_for_views: assertion failed: (!priv->frame_in_progress)
Jan 25 20:40:30 machine gnome-shell[4184]: Bail out! libmutter:ERROR:../src/compositor/compositor.c:473:invalidate_top_window_actor_for_views: assertion failed: (!priv->frame_in_progress)
Jan 25 20:40:30 machine audit[4184]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=4184 comm="gnome-shell" exe="/usr/bin/gnome-shell" sig=6 res=1
Jan 25 20:40:30 machine gnome-shell[4184]: == Stack trace for context 0x55cf59b03150 ==
Jan 25 20:40:30 machine gnome-shell[4184]: #0   7fff598dab70 b   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4708 (10d13d5b9880 @ 10)
Jan 25 20:40:30 machine gnome-shell[4184]: #1   7fff598dabe0 I   self-hosted:157 (31def91bdba0 @ 246)
Jan 25 20:40:30 machine gnome-shell[4184]: #2   7fff598dacd0 b   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4708 (10d13d5b9790 @ 1197)
Jan 25 20:40:30 machine gnome-shell[4184]: #3   55cf59bceb00 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:4215 (10d13d5b7e20 @ 3299)
Jan 25 20:40:30 machine gnome-shell[4184]: #4   55cf59bcea68 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/tiling.js:3338 (10d13d5b6d80 @ 37)
Jan 25 20:40:30 machine gnome-shell[4184]: #5   55cf59bce9b8 i   file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/utils.js:522 (10d13d5c6150 @ 160)
Jan 25 20:40:30 machine gnome-shell[4184]: #6   55cf59bce928 i   resource:///org/gnome/shell/ui/init.js:21 (31def918d8d0 @ 48)
Jan 25 20:40:32 machine systemd-coredump[21340]: [🡕] Process 4184 (gnome-shell) of user 1000 dumped core.

Furthermore I realized this warning. This is just in case you are generally not yet aware of it:

Jan 25 20:51:52 machine gnome-shell[32359]: #PaperWM enabled
Jan 25 20:51:52 machine gnome-shell[32359]: Gio.DesktopAppInfo has been moved to a separate platform-specific library. Please update your code to use GioUnix.DesktopAppInfo instead.
                                           0 get() ["resource:///org/gnome/gjs/modules/core/overrides/Gio.js":524:46]
                                           1 enable() ["file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/app.js":53:9]
                                           2 enable/<() ["file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/extension.js":65:19]
                                           3 forEach() ["self-hosted":157:22]
                                           4 enable() ["file:///var/home/user/.local/share/gnome-shell/extensions/paperwm@paperwm.github.com/extension.js":63:22]
                                           5 _callExtensionEnable() ["resource:///org/gnome/shell/ui/extensionSystem.js":266:38]
                                           6 loadExtension() ["resource:///org/gnome/shell/ui/extensionSystem.js":433:32]
                                           7 AsyncFunctionNext() ["self-hosted":800:27]
                                           8 anonymous() ["resource:///org/gnome/shell/ui/init.js":21:20]

[Thesola10]

thanks for the heads-up, sounds like we're in for a game of whack-a-mole. I personally use Flatpak Thunderbird and have never experienced this issue, we should try and recreate the issue in the test VM. That or auto-move-windows could be at fault.