[Wayland-bugs] [Bug 781945] SIGSEGV dragging window on Wayland when toplevel window set_transient_for is set to another toplevel

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=781945

--- Comment #5 from Olivier Fourdan <ofourdan at redhat.com> ---
Created attachment 350853
  --> https://bugzilla.gnome.org/attachment.cgi?id=350853&action=edit
[PATCH] wayland: Do not map toplevel utility as popup

Applications can specify the type hint as utility even on toplevel
windows.

When that toplevel is also marked as a transient for another window,
GDK Wayland backend would translate that as an xdg_popup which is not
appropriate.

While utility temp windows should remain mapped as subsurfaces (such as
the ones used by treeviews), regular windows should not translate as
neither a subsurface nor an xdg_popup.

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