Kann mit $librewolf keine mehreren Instanzen mehr starten

Ich kann seit einiger Zeit mit $ librewolf keine mehreren Instanzen mehr starten. (chromium, brave, mullvad gehen) Die Fehlermeldung ist: „Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile.“

Ich verwende AppArmor und firejail auf Arch. Letzte Meldungen:

Reading profile /etc/firejail/whitelist-var-common.inc
Seccomp list in: !chroot, check list: @default-keep, prelist: unknown,
Parent pid 10258, child pid 10262
Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set.
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: /sbin directory link was not blacklisted
Warning: /usr/sbin directory link was not blacklisted
Warning: cleaning all supplementary groups
Seccomp list in: !chroot, check list: @default-keep, prelist: unknown,
Warning: cleaning all supplementary groups
Warning: Replacing profile instead of stacking it. It is a legacy behavior that can result in relaxation of the protection. It is here as a temporary measure to unbreak the software that has been broken by switching to the stacking behavior.
Child process initialized in 182.44 ms
ATTENTION: default value of option mesa_glthread overridden by environment.
JavaScript error: resource://gre/modules/XULStore.sys.mjs, line 84: Error: Can't find profile directory.
JavaScript error: resource://gre/modules/XULStore.sys.mjs, line 84: Error: Can't find profile directory.
JavaScript error: resource://gre/modules/XULStore.sys.mjs, line 84: Error: Can't find profile directory.
JavaScript error: resource://gre/modules/XULStore.sys.mjs, line 84: Error: Can't find profile directory.
JavaScript error: resource://gre/modules/XULStore.sys.mjs, line 84: Error: Can't find profile directory.
[Parent 9, IPC I/O Parent] WARNING: process 72 exited on signal 9: file /root/.local/share/bsys6/work/librewolf-129.0.2-1/ipc/chromium/src/base/process_util_posix.cc:335

Solche Fehler sind in der Vergangenheit bei andere schon öfter aufgetreten.

Funktioniert es ohne Firejail bzw. AppArmor?

Es geht ohne firejail. Jetzt müsste ich rausfinden, an welchen Einstellungen es liegt.

Edit: Ist bereits reported: https://github.com/netblue30/firejail/issues/6413