Comment 0 for bug 1575896

As of today's firefox 46 release, the scrollbar thumb is not being drawn. Probably related to switchover to gtk3. Gtk theme is the ubuntu-gnome default of Adwaita.

See screenshot attached.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 46.0+build5-0ubuntu0.16.04.2
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jbarnett 2545 F.... pulseaudio
 /dev/snd/controlC1: jbarnett 2545 F.... pulseaudio
 /dev/snd/controlC3: jbarnett 2545 F.... pulseaudio
 /dev/snd/controlC2: jbarnett 2545 F.... pulseaudio
BuildID: 20160425114621
Channel: Unavailable
CurrentDesktop: GNOME
Date: Wed Apr 27 12:47:31 2016
EcryptfsInUse: Yes
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 2015-08-21 (250 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150819)
IpRoute:
 default via 172.16.1.1 dev wlp3s0 proto static metric 600
 169.254.0.0/16 dev docker0 scope link metric 1000 linkdown
 172.16.1.0/24 dev wlp3s0 proto kernel scope link src 172.16.1.43 metric 600
 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
Locales: extensions.sqlite corrupt or missing
PrefSources:
 prefs.js
 [Profile]/<email address hidden>/defaults/preferences/cookiemgr.js
 [Profile]/<email address hidden>/defaults/preferences/prefs.js
 [Profile]/extensions/{ea4637dc-e014-4c17-9c2c-879322d23268}/defaults/preferences/defaults.js
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=46.0/20160425114621 (In use)
RelatedPackageVersions:
 google-talkplugin 5.41.0.0-1
 browser-plugin-freshplayer-nacl 0.3.4-3
 browser-plugin-freshplayer-pepperflash 0.3.4-3
 adobe-flashplugin 1:20160407.1-0ubuntu1
 gnome-shell 3.20.1-0ubuntu1~xenial3
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: Upgraded to xenial on 2016-02-16 (71 days ago)
dmi.bios.date: 06/05/2015
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP114.88Z.0172.B04.1506051511
dmi.board.name: Mac-06F11FD93F0323C5
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro11,4
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-06F11FD93F0323C5
dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0172.B04.1506051511:bd06/05/2015:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5:
dmi.product.name: MacBookPro11,4
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.