Public bug reported:

Kubuntu install with XFCE desktop. Thunderbird 31.8.0.

Since a few months I have an intermittent behavior where, for no
apparent reason, when I start to compose a new email message, there is
no cursor in the address field or message field (when I click there).
Mouse works as normal and can select text.

On top of this, and this is the suspected bug, the missing cursor often
but not always means that any keyboard action (trying to write) works on
the main Thunderbird window. Space, for instance, scrolls through the
message in the message pane in the main Thunderbird window, even if the
new being composed in another window is on top.

The only way around this issue is to restart Thunderbird or to open a
new email window. When I open another new message window, the cursor is
back in the original email message window.

I have noticed that it takes much longer time to load the email message
window the first time I start Thunderbird, compared to email message 2,3
etc. Now, when I see the above issue opening a new email message also
takes more time. I am guessing something crashes in the backend and that
it is restarted when I open another new message window.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: thunderbird 1:31.8.0+build1-0ubuntu0.14.10.1
ProcVersionSignature: Ubuntu 3.16.0-44.59-generic 3.16.7-ckt14
Uname: Linux 3.16.0-44-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.14.7-0ubuntu8.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  anders     2679 F.... pulseaudio
 /dev/snd/controlC0:  anders     2679 F.... pulseaudio
BuildID: 20150715162430
Channel: Unavailable
CurrentDesktop: XFCE
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order 
/var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission 
denied
Date: Tue Sep  1 07:18:28 2015
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini 
or extensions.sqlite)
IpRoute:
 default via 192.168.1.1 dev p3p1  proto static 
 192.168.1.0/24 dev p3p1  proto kernel  scope link  src 192.168.1.13  metric 1
Locales: extensions.sqlite corrupt or missing
MostRecentCrashID: bp-4a972d4c-97c3-4487-a40e-380872150720
PrefSources:
 prefs.js
 
[Profile]/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/defaults/preferences/lightning.js
ProcEnviron:
 LANGUAGE=sv_SE
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=sv_SE.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=Safe Mode/Safe Mode (Out of date)
RelatedPackageVersions:
 adobe-flashplugin 1:20150716.1-0utopic1
 kopete            4:4.14.1-0ubuntu2
 totem-mozilla     3.10.1-1ubuntu6
RfKill:
 0: phy0: Wireless LAN
        Soft blocked: yes
        Hard blocked: no
RunningIncompatibleAddons: False
SourcePackage: thunderbird
SubmittedCrashIDs: bp-4a972d4c-97c3-4487-a40e-380872150720
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
 
dmi.bios.date: 02/06/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.02
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: FS437T
dmi.board.vendor: Shuttle Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1.02:bd02/06/2014:svnShuttleInc.:pnDS437T:pvrV1.0:rvnShuttleInc.:rnFS437T:rvr1.0:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: DS437T
dmi.product.version: V1.0
dmi.sys.vendor: Shuttle Inc.

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


** Tags: amd64 apport-bug third-party-packages utopic

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https://bugs.launchpad.net/bugs/1490821

Title:
  No cursor/keyboard action in email being composed

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