Strange white line bug on Sony Arc Xperia S

[DGoodayle]

We are shrinking the resolution down (It works across every other device except this one) and we've ran into a strange white line on the right-hand side of the phone in landscape mode (Left and Right) but not in portrait mode.

Has anyone ran into this before?

Screenshots are attached.

[unikronsoftware]

Not seen it before, but it should be possible to narrow down.
Eg. is your background fill color white?
Try moving something back and forth in z, does it ever appear above the white thing?
Does a simpler scene work, is it just this one that fails?