Bug#1122611: gplanarity: since the port to Gtk3 the buttons doesn't show up at first, only after having been hovered upon

[Simon McVittie]

On Thu, 18 Dec 2025 at 22:06:01 +0100, Alexandre Detiste wrote:
>I've got a workaround:
>
>On a Wayland desktop, forcing X11 mode
>makes everything works fine again
>
>"GDK_BACKEND=x11 gplanarity"
>
>Sprinkling some  "setenv("GDK_BACKEND","x11",1);" all over the place
>get things done, but I'm still hoping for a proper fix

If an app is known to work correctly via X11 but not via native Wayland,

gdk_set_allowed_backends ("x11");

is a better workaround; for example see 
<https://github.com/vim/vim/commit/f80663f17b2f2499b45eb4467088704c8298c385>.

     smcv