Bug#888521: Firefox 58 regression: pulse audio troubles

[Harald Dunkel]

Package: firefox
Version: 58.0-1

Firefox claims that pulse is not installed, e.g. for youtube.com:

"To play audio, you may need to install the required PulseAudio
software."

Pulse is installed, of course. Firefox gives me some weird error
messages:

% firefox
Home directory not accessible: Permission denied
fork(): Operation not permitted
[Child 8856, MediaPlayback #1] WARNING: 7f5fd19d04c0 Can't get cubeb context!: file /build/firefox-WvkEP5/firefox-58.0/dom/media/AudioStream.cpp, line 358
[Child 8856, MediaPlayback #4] WARNING: Decoder=7f5fc813f800 [OnMediaSinkAudioError]: file /build/firefox-WvkEP5/firefox-58.0/dom/media/MediaDecoderStateMachine.cpp, line 3642

% dpkg -l \*pulse\*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                        Version      Architecture Description
+++-===========================-============-============-==================================================
un  libao-pulse                 <none>       <none>       (no description available)
un  libcanberra-pulse           <none>       <none>       (no description available)
ii  libpulse0:amd64             11.1-4       amd64        PulseAudio client libraries
ii  libpulsedsp:amd64           11.1-4       amd64        PulseAudio OSS pre-load library
un  libsdl1.2debian-pulseaudio  <none>       <none>       (no description available)
un  libsox-fmt-pulse            <none>       <none>       (no description available)
ii  pulseaudio                  11.1-4       amd64        PulseAudio sound server
un  pulseaudio-module-bluetooth <none>       <none>       (no description available)
ii  pulseaudio-utils            11.1-4       amd64        Command line tools for the PulseAudio sound server


Safe mode makes no difference.


Regards
Harri