[Bug 1455286] [NEW] Firefox appears horribly distorted after upgrade to 38.0

Fri May 15 01:41:07 UTC 2015

Public bug reported:

Today when I opened my package manager (muon) to check for updates, I
saw there was an update for Firefox, to version 38. I installed this
along with other available updates like I always do. Upon restarting
Firefox, however, I discovered a nasty surprise. All of Firefox's UI was
appearing as if I was on a computer with a much lower screen resolution,
and web pages were appearing as if I had massively zoomed in on them.

Everything looks many times bigger than it should be: icons, toolbars,
tabs, menus, web pages, they're all big.

I have no idea how or why this happened.

I tried restarting Firefox in safe mode, wondering if it was maybe an
incompatible add-on. This did absolutely nothing for me. I began to
suspect that the update to Firefox 38 had caused the problem. So I
decided to test my theory by downgrading. The only prior version in the
repos appeared to be 28.x, but luckily, in my /var/cache/apt/archives/
folder, I found the .deb for the last version of Firefox I had installed
- 37.0.2. I opened the .deb and installed it. Upon opening Firefox,
everything was normal again -no abnormally large chrome or web pages.

I ran the upgrade to Firefox 38 again, and bingo - the problem came
back. I ran ubuntu-bug firefox to get Apport going, and then finished up
by coming here to Launchpad to submit a report. Attached a screenshot to
show the distortion.

My computer's native resolution is 1920x1080, and that's what I run.

I'll have to stick with 37.0.2 until I get some confirmation that this
issue with Firefox 38 has been addressed/resolved. Firefox is unusable
with this problem.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 38.0+build3-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18
Uname: Linux 3.13.0-52-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
BuildID: 20150511103818
Channel: Unavailable
CurrentDesktop: KDE
Date: Thu May 14 18:22:34 2015
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 2014-07-28 (290 days ago)
InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
IpRoute:
 default via 192.168.1.1 dev eth0  proto static 
 172.16.240.0/24 dev vmnet8  proto kernel  scope link  src 172.16.240.1 
 192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.21  metric 1 
 192.168.66.0/24 dev vmnet1  proto kernel  scope link  src 192.168.66.1
Locales: extensions.sqlite corrupt or missing
MostRecentCrashID: bp-3c820930-59fa-410c-9358-def442150515
Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources:
 prefs.js
 [Profile]/extensions/{11b496ea-481a-11dc-8314-0800200c9a66}/defaults/preferences/shooter.js
 [Profile]/extensions/artur.dubovoy at gmail.com/defaults/preferences/fvd_single_setup.js
 [Profile]/extensions/https-everywhere at eff.org/defaults/preferences/preferences.js
Profiles: Profile0 (Default) - LastVersion=38.0/20150511103818 (In use)
RfKill:
 0: phy0: Wireless LAN
 	Soft blocked: yes
 	Hard blocked: no
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/23/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: E16F2IG6 V3.0R
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: MS-16F2
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: Micro-Star International
dmi.chassis.version: To be filled by O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE16F2IG6V3.0R:bd12/23/2011:svn:pn:pvrTobefilledbyO.E.M.:rvnMicro-StarInternationalCo.,Ltd.:rnMS-16F2:rvrTobefilledbyO.E.M.:cvnMicro-StarInternational:ct10:cvrTobefilledbyO.E.M.:
dmi.product.version: To be filled by O.E.M.

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

** Tags: amd64 apport-bug trusty

** Attachment added: "What my browser looks like after upgrade to Firefox 38, with bug report open. Toolbars hidden for privacy reasons."
   https://bugs.launchpad.net/bugs/1455286/+attachment/4397802/+files/MAY15-FirefoxUbuntuHorriblyDistorted-ToolbarsHidden.png

** Summary changed:

- Firefox UI distorted after upgrade to 38.0
+ Firefox appears horribly distorted after upgrade to 38.0

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Title:
  Firefox appears horribly distorted after upgrade to 38.0

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