pull down tab, firefox takes over mouse focus

[drink]

If I pull down a tab (to open it out to a new window) then I never get my mouse pointer back; it retains the pull-down pointer and I cannot use it for anything. I can alt-tab to a terminal and kill firefox, though, at which point it returns to normal.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 13.0.1+build1-0ubuntu0.12.04.1
Uname: Linux 3.5.0-030500rc2-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC4: drink 2553 F.... pulseaudio
 /dev/snd/controlC3: drink 2553 F.... pulseaudio
 /dev/snd/controlC2: drink 2553 F.... pulseaudio
BuildID: 20120615112143
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'VirMIDI'/'Virtual MIDI Card 1'
   Mixer name : ''
   Components : ''
   Controls : 0
   Simple ctrls : 0
Card0.Amixer.values:

Card1.Amixer.info:
 Card hw:1 'M2x2'/'M-Audio MidiSport 2x2 at usb-0000:00:13.1-2, full speed'
   Mixer name : ''
   Components : 'USB0763:1002'
   Controls : 0
   Simple ctrls : 0
Card1.Amixer.values:

Card2.Amixer.info:
 Card hw:2 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,1458a002,00100001'
   Controls : 49
   Simple ctrls : 22
Card3.Amixer.info:
 Card hw:3 'NVidia'/'HDA NVidia at 0xfcffc000 irq 19'
   Mixer name : 'Nvidia GPU 0d HDMI/DP'
   Components : 'HDA:10de000d,10de0101,00100100'
   Controls : 24
   Simple ctrls : 4
Card4.Amixer.info:
 Card hw:4 'U0x46d0x819'/'USB Device 0x46d:0x819 at usb-0000:00:12.2-2, high speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:0819'
   Controls : 2
   Simple ctrls : 1
Card4.Amixer.values:
 Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
   Capture channels: Mono
   Limits: Capture 0 - 6144
   Mono: Capture 4608 [75%] [21.00dB] [on]
Channel: release
CurrentDmesg:
 Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
 dmesg: write failed: Broken pipe
Date: Sat Jun 23 08:07:23 2012
ForcedLayersAccel: False
MostRecentCrashID: bp-9df26af0-3e9f-4ef9-b900-c6bf32120514
PrefErrors: Unexpected character before close parenthesis @ [Profile]/extensions/{e4a8a97b-f2ed-450b-b12d-ee082ba24781}/defaults/preferences/greasemonkey.js:4
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=13.0.1/20120615112143 (In use)
RelatedPackageVersions:
 icedtea-6-plugin 1.2-2ubuntu1
 rhythmbox-mozilla 2.96-0ubuntu4
 totem-mozilla 3.0.1-0ubuntu21
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:

dmi.bios.date: 03/22/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F12
dmi.board.name: GA-MA770T-UD3P
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF12:bd03/22/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA770T-UD3P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA770T-UD3P:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA770T-UD3P
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.