Ubuntu browsers not loading/rendering certain websites correctly

[Vitor]

Since the last time I upgraded the Ubuntu packages, I noticed that Firefox is not loading Youtube, Facebook and others as it should. The visual part of the page becomes very... simplistic, like a pure and badly configured CSS or HTML file...
I took screenshots of how those websites are shown now (attached to this bug report).

It is impossible to watch videos in Youtube now, because it's not loading properly.

Now Google Chromium is also showing this same bug...

I do not know if this bug extends anyhow to security, because I'm not a programmer, I cannot verify what happens in the "background", I can only see the visible part of the software (the front-end), and I know that the rendering has something wrong in ALL famous browsers on Ubuntu.

Midori and Google Chrome (the proprietary one) are working properly.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 45.0+build2-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-83.127-lowlatency 3.13.11-ckt35
Uname: Linux 3.13.0-83-lowlatency x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: vitor 2370 F.... pulseaudio
BuildID: 20160304114926
Channel: Unavailable
CurrentDesktop: Unity
Date: Wed Mar 30 19:38:10 2016
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 2016-03-14 (16 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
IpRoute:
 default via 192.168.0.1 dev wlan0 proto static
 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.15 metric 9
Locales: extensions.sqlite corrupt or missing
MostRecentCrashID: bp-a3fa40f8-ca32-4598-afdc-fb3bf2160219
PrefSources:
 prefs.js
 [Profile]/<email address hidden>/defaults/preferences/defaults.js
Profiles: Profile0 (Default) - LastVersion=45.0/20160304114926
RelatedPackageVersions:
 totem-mozilla 3.10.1-1ubuntu4
 rhythmbox-mozilla 3.0.2-0ubuntu2
 browser-plugin-libreoffice 1:4.2.8-0ubuntu4
RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs:
 bp-a3fa40f8-ca32-4598-afdc-fb3bf2160219
 bp-6f0e393c-5ea9-433f-aee9-1a5fb2160119
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/16/2013
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V2.21
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: EA50_HC_HR
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Insyde Corp.
dmi.chassis.version: V2.21
dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.21:bd12/16/2013:svnAcer:pnAspireE1-531:pvrV2.21:rvnAcer:rnEA50_HC_HR:rvrType2-BoardVersion:cvnInsydeCorp.:ct10:cvrV2.21:
dmi.product.name: Aspire E1-531
dmi.product.version: V2.21
dmi.sys.vendor: Acer

[Vidiot_X (vidiot-x)]

Firefox not working as described above here as well.

[Vidiot_X (vidiot-x)]

It seems to be related to Ghostery blocking the "Customer Interactions" tracker. Enabling it (Customer Interactions tracker) in Ghostery for YouTube seems to get things running again.

[Leuneeh (pioupiougirl81)]

Hi ! I'm not on Ubuntu but I had the same problem since yesterday on windows with Firefox too ! I found the solution with the fonction "refresh Firefox" ! https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

[Vitor (vcatao)]

The problem is solved in Firefox. Youtube and Facebook are being rendered correctly again.
So was this an addon bug? I didn't see Firefox updating addons before working again...

Chromium is not working properly, unless I deactivate Ghostery or reenable an entire category of trackers (as Vidiot_X stated).
But Firefox, for some reason, started working again and I didn't have to disable nothing on Ghostery nor in any other addon.
Google Chrome didn't showed any problem related to this.

[Vitor (vcatao)]

This is indeed an addon problem. I'll tell the Ghostery developper and ask a fix.

For now, the solution is to allow the trackers inside the customer interactions category, or as in my case, the trackers in "Signallers" category.

That's still weird; I configured my Ghostery to allow trackers from first-party websites (like, allow youtube trackers at youtube.com).
This bug shouldn't happen according to my configurations...

[Vitor (vcatao)]

Hey guys, I think I don't need to tell the developpers because the bug was already fixed.