Input Dropdown expand - Firefox crashes

[webmaster]

Occurs on two different PCs with Ubuntu x64 14.04.

Classic input type="dropdown" causes Firefox to go unresponsive and crash after a while.
Faster restart can be done by manually Forcing quit and restarting browser.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 43.0~a2~hg20151013r284465-0ubuntu1~umd1~trusty [origin: LP-PPA-ubuntu-mozilla-daily-firefox-aurora]
ProcVersionSignature: Ubuntu 3.19.0-30.34~14.04.1-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.15
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: tstepnikowski 1605 F.... pulseaudio
 /dev/snd/controlC0: tstepnikowski 1605 F.... pulseaudio
BuildID: 20151013121316
Channel: aurora
CurrentDesktop: Unity
Date: Wed Oct 14 12:32:34 2015
DefaultProfileExtensions: extensions.sqlite corrupt or missing
DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
DefaultProfileLocales: extensions.sqlite corrupt or missing
DefaultProfilePlugins:
 DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla)
 VLC Multimedia Plugin (compatible Videos 3.10.1) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla)
 Windows Media Player Plug-in 10 (compatible; Videos) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla)
 QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla)
 iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
DefaultProfilePrefSources:
 /usr/lib/firefox/defaults/pref/vendor-gre.js
 /usr/lib/firefox/defaults/pref/channel-prefs.js
 prefs.js
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-09-23 (21 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
IpRoute:
 default via 192.168.0.1 dev eth0 proto static
 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.67 metric 1
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
Profile1Extensions: extensions.sqlite corrupt or missing
Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile1Locales: extensions.sqlite corrupt or missing
Profile1PrefSources:
 /usr/lib/firefox/defaults/pref/vendor-gre.js
 /usr/lib/firefox/defaults/pref/channel-prefs.js
 prefs.js
Profile1Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile0 (Default) - LastVersion=41.0/20150918100310 (Out of date)
 Profile1 - LastVersion=43.0a2/20151013121316 (In use)
RelatedPackageVersions:
 totem-mozilla 3.10.1-1ubuntu4
 rhythmbox-mozilla 3.0.2-0ubuntu2
 gnome-shell 3.10.4-0ubuntu5.2
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/23/2014
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: L51 v01.18
dmi.board.asset.tag: CZC4132S6Q
dmi.board.name: 1906
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC4132S6Q
dmi.chassis.type: 4
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrL51v01.18:bd01/23/2014:svnHewlett-Packard:pnHPZ230SFFWorkstation:pvr:rvnHewlett-Packard:rn1906:rvr:cvnHewlett-Packard:ct4:cvr:
dmi.product.name: HP Z230 SFF Workstation
dmi.sys.vendor: Hewlett-Packard

[webmaster (1-webmaster-i)]

If dropdown option is choosen by keyboard the Firefox works as expected.

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version.

When you test it and it is still an issue, kindly upload the updated logs by running only once:

apport-collect 1505997

and any other logs that are relevant for this particular issue.

[Launchpad Janitor (janitor)]

[Expired for firefox (Ubuntu) because there has been no activity for 60 days.]