Pointing gregory to this patch might be good as well. Maybe you can post a diff in the gsdx thread.
Yeah I'll send him a PM about it along with testing results as well. Right now the border is still there sadly, even with his hack.
[Edit]
Sent.
Please post a gs dump so I can do replay it on my side.
However, I'm currently improving the opengl backend of GSdx. So it won't be my priority.
This is it I think. (Shift+F8 right?)
http://lastfencer.net/gsdx_20150426230326.gs
It's from PCSX2 1.3.1-182 and it's with the patch I PMed you about applied to the GSdx.
I can also make a gs dump without if you need it. Just let me know.
And no worries about the priority. Anything you can do whenever will be appreciated.