STR:

1. Try to play a video with audio, for example: 
���https://media.libreplanet.org/mgoblin_media/media_entries/2070/FSFKeynotewithSlidesHighRes.ogg

EXPECTED:
The video should play with audio.

ACTUAL:
There is no audio and a notification shows up saying: "To play audio, you may
need to install the required PulseAudio software" + button "Learn how". But
pulseaudio is already installed and works with other apps:

[~]: rpm -q pulseaudio
pulseaudio-9.0-8.1.x86_64

FWIW: Security level is set to "Safest". torbrowser-apparmor-profile is
installed and apparmor.service is running.

This happens only with openSUSE's torbrowser-launcher. If I download and run
the official Tor browser (from
https://www.torproject.org/projects/torbrowser.html.en) audio works as
expected.