[Wayland-bugs] [Bug 792889] On kwin_wayland, GTK3 applications started with GDK_BACKEND=wayland *always* request CSD despite preferring SSD

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=792889

--- Comment #22 from Kyle De'Vir <kyle.devir at mykolab.com> ---
(In reply to Daniel Stone from comment #21)
> or that the server prefer SSD by default.

Doesn't this seem... backwards? Why should clients that don't provide their own
headerbars request CSD on SSD-preferring compositors? Shouldn't they be
requesting SSD instead? What's the logic here?

> That is as intended. You might have to find a slightly older app which
> doesn't have a headerbar; as Drew suggested, gtk-demo would be a good start.

gtk3-demo renders its own headerbar, so CSD makes sense. gtk3-demo-application,
however, doesn't, so SSD should be preferred, no?

When I make clients that provide their own headerbars ask for SSD, kwin_wayland
draws SSD as it should, but clients that do not provide such, get nothing. Does
this suggest a kwin_wayland bug to you, Daniel?

Sorry if I'm repeating myself so often, because I'm intensely frustrated trying
to figure out what the solution is supposed to be.

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