https://bugs.kde.org/show_bug.cgi?id=397834

            Bug ID: 397834
           Summary: Native Firefox/Wayland port works poorly on Wayland
                    Plasma
           Product: kwin
           Version: 5.13.4
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: wayland-generic
          Assignee: kwin-bugs-n...@kde.org
          Reporter: stran...@redhat.com
  Target Milestone: ---

Follow up from https://bugzilla.mozilla.org/show_bug.cgi?id=1478283

Hi Guys,

I work on Firefox/Wayland port and I have troubles to make it functional under
Plasma Wayland compositor. I have a stock Fedora 28 builds with all updates,
packages:

plasma-*-5.13.4-1.fc28.x86_64 
qt5-*-5.10.1-1.fc28.x86_64

and Intel(R) HD Graphics 530

Firefox Wayland can be installed from https://firefox-flatpak.mojefedora.cz/ as
a flatpak or built from source with this line at .mozconfig:

ac_add_options --enable-default-toolkit=cairo-gtk3-wayland

As for the issues:

1) With standard (non-accelerated) config, Firefox creates wl_subsurface which
is attached to the wl_surface owned by GtkWidget. That works on mutter/weston
but Plasma ignores that and just blank window is shown instead of Firefox
window. Running with WAYLAND_DEBUG doesn't show any error/failure.

2) When accelerated graphics is used (egl_window), Firefox content is rendered
but mouse input is ignored, mouse pointer reacts to content under Firefox
window.

I appreciate any help and/or guidance how to debug and fix those issued on
Plasma.

Thanks!

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