I found the ugly rendering is also persistent (not just on hover) on some websites, and doesn't completely go away when setting the two about:config options. For me it is always there in the google mail interface (however, not the displayed mail content).
Here, it started after an ubuntu 18.04 to 20.04 upgrade. It goes away if I uncheck "Allow pages to choose their own fonts, instead of your selections above" in the Firefox font settings, but then the integrated PDF viewer is not able to show most documents: Fonts are just entirely gone and you see documents with mostly blank pages (not sure if that is expected or a related / different bug). -- 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/1883369 Title: Weird font rendering on certain website with firefox Status in Mozilla Firefox: Confirmed Status in firefox package in Ubuntu: New Bug description: When hovering some elements, some letters moves slightly. A gif explains better than words here: https://trancart.eu/lutim/l7qWMFQF/7Q9YJRUn.gif I reproduce this at least on twitter and gitlab.com, but I remember having it on other websites. My OS: kubuntu 20.04 Reproduced on both firefox dev edition and firefox from apt package. Sorry in advance if it is not the correct place, I have no idea where to report that. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: firefox 77.0.1+build1-0ubuntu0.20.04.1 ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34 Uname: Linux 5.4.0-33-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair AddonCompatCheckDisabled: False ApportVersion: 2.20.11-0ubuntu27.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: augustin 4577 F.... pulseaudio BuildID: 20200602222727 CasperMD5CheckResult: skip Channel: Unavailable CurrentDesktop: KDE Date: Sat Jun 13 16:14:37 2020 DefaultProfileExtensions: extensions.sqlite corrupt or missing DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) DefaultProfileLocales: extensions.sqlite corrupt or missing DefaultProfilePrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:731 DefaultProfilePrefSources: prefs.js DefaultProfileThemes: extensions.sqlite corrupt or missing EcryptfsInUse: Yes ExecutablePath: /usr/lib/firefox/firefox ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2016-11-10 (1310 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IpRoute: default via 192.168.0.254 dev enp0s31f6 proto dhcp metric 100 10.0.3.0/24 dev lxcbr0 proto kernel scope link src 10.0.3.1 linkdown 169.254.0.0/16 dev docker0 scope link metric 1000 linkdown 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 192.168.0.0/24 dev enp0s31f6 proto kernel scope link src 192.168.0.4 metric 100 MostRecentCrashID: bp-9faa8c77-de9e-4f98-9e75-033440200610 Profile1Extensions: extensions.sqlite corrupt or missing Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile1Locales: extensions.sqlite corrupt or missing Profile1PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:731 Profile1PrefSources: prefs.js Profile1Themes: extensions.sqlite corrupt or missing Profile2Extensions: extensions.sqlite corrupt or missing Profile2IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile2Locales: extensions.sqlite corrupt or missing Profile2PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:731 Profile2PrefSources: prefs.js Profile2Themes: extensions.sqlite corrupt or missing Profile3Extensions: extensions.sqlite corrupt or missing Profile3IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile3Locales: extensions.sqlite corrupt or missing Profile3PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:731 Profile3PrefSources: prefs.js Profile3Themes: extensions.sqlite corrupt or missing Profile4Extensions: extensions.sqlite corrupt or missing Profile4IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile4Locales: extensions.sqlite corrupt or missing Profile4PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:731 Profile4PrefSources: prefs.js Profile4Themes: extensions.sqlite corrupt or missing Profiles: Profile3 - LastVersion=68.0/20190627143605 (Out of date) Profile1 - LastVersion=78.0/20200609215727 (Out of date) Profile0 (Default) - LastVersion=77.0.1/20200602222727 (In use) Profile2 - LastVersion=60.5.2/20190221164337 (Out of date) Profile4 - LastVersion=72.0.1/20200107212822 (Out of date) RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: Upgraded to focal on 2020-05-09 (34 days ago) dmi.bios.date: 05/17/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1FET51W (1.25 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FBCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1FET51W(1.25):bd05/17/2017:svnLENOVO:pn20FBCTO1WW:pvrThinkPadX1Carbon4th:rvnLENOVO:rn20FBCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon 4th dmi.product.name: 20FBCTO1WW dmi.product.sku: LENOVO_MT_20FB_BU_Think_FM_ThinkPad X1 Carbon 4th dmi.product.version: ThinkPad X1 Carbon 4th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1883369/+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
