[Wayland-bugs] [Bug 101922] subcomposited surfaces with content outside shell surface area lack proper damage on some occasions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101922

            Bug ID: 101922
           Summary: subcomposited surfaces with content outside shell
                    surface area lack proper damage on some occasions
           Product: Wayland
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: weston
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: k.philipp at gmail.com

Created attachment 132984
  --> https://bugs.freedesktop.org/attachment.cgi?id=132984&action=edit
Window decoration in subsurface that stays visible after minimizing window

If subsurfaces have parts that are visible outside the area of their parent
shell surface, these parts will not get proper damage and thus have improper
contents on some occasions.

Confirmed are:
* minimizing windows
* switching between windows
but there may be more.

To test, move some subsurface outside the window area in clients/subsurfaces.c,
e.g. add some arbitrary x/y offset to a widget_set_allocation call in
resize_handler.

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