I spotted the bug on Youtube and a few other google websites after an automatic update to firefox quantum 57.0 64-bits, and found the bug reported to mozilla here: https://support.mozilla.org/en-US/questions/1186663.
=> Using one of my installed fonts for all websites "fixes" the issue (sans-serif)
=> Using Roboto replicates the issue on all websites (or more than previously, I didn't check everywhere)
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 57.0+build4-0ubuntu0.16.04.5
ProcVersionSignature: Ubuntu 4.4.0-101.124-generic 4.4.95
Uname: Linux 4.4.0-101-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2.13
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: anne-marie 2493 F.... pulseaudio
BuildID: 20171115095126
Channel: Unavailable
CurrentDesktop: Unity
Date: Sat Nov 25 22:13:34 2017
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 2014-09-26 (1155 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
IpRoute:
default via 192.168.1.1 dev eth0 proto static metric 100
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.62 metric 100
Locales: extensions.sqlite corrupt or missing
MostRecentCrashID: bp-308e2810-1c4c-4555-b297-b86711170928
Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=57.0/20171115095126 (In use)
RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs:
bp-308e2810-1c4c-4555-b297-b86711170928
bp-0cad8d28-c93f-4730-9252-2fc122161224
bp-2627122b-5e51-413a-9cea-60bd22161202
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: Upgraded to xenial on 2016-09-24 (427 days ago)
dmi.bios.date: 05/11/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N56VZ.204
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: N56VZ
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN56VZ.204:bd05/11/2012:svnASUSTeKCOMPUTERINC.:pnN56VZ:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN56VZ:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: N56VZ
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu since that time. Your problem may have been fixed with some of the updates.
It would help us a lot if you could test on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running only once in a terminal:
apport-collect 1734483
and add any additional information that you think relevant. Alternatively, please confirm that this is no longer a problem and that we can close the report. If we do not hear from you the bug report will close itself in approximately two months time.
Thank you again for helping make Ubuntu better.
Paul White
[Ubuntu Bug Squad]