[openbox] Intel SNA and titlebar icons

[Xyne]

Hi,

On a laptop with integrated Intel graphics, the titlebar icons are not rendered
properly when using the SNA acceleration method, i.e. 

Option "AccelMethod" "sna"

in the "Device" section of /etc/X11/xorg.conf.d/20-intel.conf.

Here is a screenshot to illustrate the problem:
http://xyne.archlinux.ca/tmp/openbox_titlebar.png

Basically, the area where each icon is rendered acts as though it were a hole
overlooking a tiled background of the icon. Resizing the window by dragging it
scrolls over the background and multiple icons will move through the icon area.

Changing the acceleration method to "uxa" in the aforementioned
configuration file resolves the issue.

Is this an Intel bug or an Openbox bug?

I am using Openbox 3.5.0 on a fully updated Arch Linux system.

Regards,
Xyne