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.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1564137 Title: Ubuntu browsers not loading/rendering certain websites correctly Status in chromium-browser package in Ubuntu: New Status in firefox package in Ubuntu: New Bug description: Since the last time I upgraded the Ubuntu packages, I noticed that Firefox is the only browser 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 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. 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]/extensions/anttool...@ant.com/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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1564137/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp