This just became even more prominent in 95 with colorways. We need a way to support this with alpha visuals as XShape is neither available on Wayland nor on X11 with HW Webrender - i.e. it's only available in legacy fallback paths. As the default theme supports this (even though with a grey corner), I suppose this is not really a graphics but rather a theme issue.
Emilio, do you happen to know how the default theme gets its corners and what would need to be done to make it work for other themes as well? -- 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/1871644 Title: Top corners of Firefox windows have weird black protrusions from the rounded edges Status in Mozilla Firefox: Confirmed Status in firefox package in Ubuntu: Confirmed Bug description: Image to illustrate the problem is attached. All firefox windows on Wayland (EDIT: and X11) have a weird black protrusion from the top- left and top-right corners where yaru has curved the window corners, but something from Firefox appears to not be being clipped by the theme. I need to double check whether this appears on X11, but for now consider it Wayland only until I report back, although oSoMoN has checked their system and they don't see the behaviour (on X11). EDIT: I have now checked X11 on my system and I see the same behaviour as described above, so this is affecting BOTH Wayland AND X11 for me. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: firefox 75.0+build3-0ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu25 Architecture: amd64 BuildID: 20200403170909 CurrentDesktop: ubuntu:GNOME Date: Wed Apr 8 14:48:56 2020 InstallationDate: Installed on 2020-03-03 (35 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200303) SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1871644/+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