Firefox 88 Rendering problems

[Stefano Dall'Agata]

After the last update the cursor in text mode will apply incomplete, some icons appear pixellated, as well as the selected text.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: firefox 88.0+build2-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-50-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: stefano 2159 F.... pulseaudio
BuildID: 20210415204500
CasperMD5CheckResult: skip
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Sat May 1 12:59:36 2021
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:352
DefaultProfilePrefSources: prefs.js
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 # Include files from /etc/network/interfaces.d:
 source-directory /etc/network/interfaces.d
InstallationDate: Installed on 2020-05-17 (348 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
IpRoute:
 default via 192.168.1.1 dev enp3s0 proto dhcp metric 100
 default via 192.168.1.1 dev wlp2s0 proto dhcp metric 600
 169.254.0.0/16 dev wlp2s0 scope link metric 1000
 192.168.1.0/24 dev enp3s0 proto kernel scope link src 192.168.1.110 metric 100
 192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.104 metric 600
MostRecentCrashID: bp-7c359224-43b9-4b7a-baa5-8c0a00190331
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:352
Profile1PrefSources: prefs.js
Profile1Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile1 - LastVersion=88.0/20210415204500 (In use)
 Profile0 (Default) - LastVersion=76.0.1/20200507114007 (Out of date)
RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs:
 bp-7c359224-43b9-4b7a-baa5-8c0a00190331
 bp-ecd72c32-0935-4623-8e22-6a09a0181224
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/18/2014
dmi.bios.release: 1.40
dmi.bios.vendor: LENOVO
dmi.bios.version: A7CN40WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Lancer 5A6
dmi.board.vendor: LENOVO
dmi.board.version: SDK0F82993WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G50-30
dmi.ec.firmware.release: 1.40
dmi.modalias: dmi:bvnLENOVO:bvrA7CN40WW:bd07/18/2014:br1.40:efr1.40:svnLENOVO:pn80G0:pvrLenovoG50-30:rvnLENOVO:rnLancer5A6:rvrSDK0F82993WIN:cvnLENOVO:ct10:cvrLenovoG50-30:
dmi.product.family: IDEAPAD
dmi.product.name: 80G0
dmi.product.sku: LENOVO_MT_80G0_BU_idea_FM_Lenovo G50-30
dmi.product.version: Lenovo G50-30
dmi.sys.vendor: LENOVO

[Stefano Dall'Agata (essedia1960)]

Other picture of problem, the black pixel.

[Stefano Dall'Agata (essedia1960)]

Even with Wordpress