Artifacts appear when I watch video in Youtube

[Artyom Pozharov]

Only with GNOME on Wayland session with Firefox

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: firefox 69.0+build2-0ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-10.11-generic 5.3.0-rc8
Uname: Linux 5.3.0-10-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
BuildID: 20190911111951
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 13 23:37:25 2019
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:997
DefaultProfileThemes: extensions.sqlite corrupt or missing
InstallationDate: Installed on 2019-09-09 (4 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190909)
ProcEnviron:
 LANGUAGE=ru_UA:ru
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_UA.UTF-8
 SHELL=/bin/bash
Profiles:
 Profile1 (Default) - LastVersion=None/None (Out of date)
 Profile0 - LastVersion=69.0/20190911111951 (In use)
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)

[Olivier Tilloy (osomon)]

Thanks for the report Артём, and sorry for the lack of feedback. Did the latest update fix this, by any chance? If not, would you mind filing an upstream bug report at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CFirefox and sharing the link to it here?