Interaction between border-image and background gradients

Given…

/* both */
margin: 20px;
width: 400px;
height: 200px;
border-width: 20px;
-webkit-border-image: url(transparent.png) 0; /* transparent image to avoid
confusion */

/* top */
background: -webkit-gradient(linear, left top, left bottom, from(red),
to(blue));

/* bottom */
background: -webkit-gradient(linear, left top, right top, from(red),
to(blue));


Safari renders…

[image: gradients.png]

As does Firefox, with the equivalent rules.

Is this correct behaviour? Why does the gradient extend to the border edge
in one direction only? Why the opposing stripes in the other direction?


David