[Bug 1643262] [NEW] Muting a tab doesn't actually mute it

[Thadah Denyse]

Public bug reported:

Description:    Kubuntu 16.04.1 LTS
Release:        16.04

Installed firefox pkg: 49.0.2+build2-0ubuntu0.16.04.2

When trying to mute a tab it doesn't mute it and keeps playing the sound in the tab.
Reloading the tab doesn't solve the problem.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 49.0.2+build2-0ubuntu0.16.04.2
ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24
Uname: Linux 4.4.0-47-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC2D0p:   thadah     1803 F...m pulseaudio
 /dev/snd/controlC2:  thadah     1803 F.... pulseaudio
 /dev/snd/controlC1:  thadah     1803 F.... pulseaudio
 /dev/snd/controlC0:  thadah     1803 F.... pulseaudio
BuildID: 20161025170400
Channel: Unavailable
CurrentDesktop: KDE
Date: Sun Nov 20 03:33:45 2016
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2016-11-05 (14 days ago)
InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IpRoute:
 default via 192.168.0.1 dev enp3s0  proto static  metric 100 
 25.0.0.0/8 dev ham0  proto kernel  scope link  src 25.28.28.138 
 169.254.0.0/16 dev enp3s0  scope link  metric 1000 
 192.168.0.0/24 dev enp3s0  proto kernel  scope link  src 192.168.0.19  metric 100
Locales: extensions.sqlite corrupt or missing
Plugins:
 Java(TM) Plug-in 11.111.2 - /usr/lib/jvm/java-8-oracle/jre/lib/amd64/libnpjp2.so
 Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources: prefs.js
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=49.0.2/20161025170400 (In use)
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/13/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: E16GFIMS.62D
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: MS-16GF
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:0.B
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE16GFIMS.62D:bd04/13/2015:svnMicro-StarInternationalCo.,Ltd.:pnGE602PC:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-16GF:rvrREV0.B:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: GE60 2PC
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.

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


** Tags: amd64 apport-bug xenial

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Title:
  Muting a tab doesn't actually mute it

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