Referenced linearGradient is not rendered properly

Attributes defined on the referenced linearGradient are not properly inherited by the new linearGradient, which is rendered strangely.

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File Inkscape_LinearGradient.svg

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="128" height="128">
 <defs>
  <linearGradient id="linearGradient1" gradientUnits="userSpaceOnUse" x1="" y1="0" x2="0" y2="128">
   <stop stop-color="#8392de" offset="0"/>
   <stop stop-color="#9ce7fd" offset="1"/>
  </linearGradient>
  <linearGradient id="linearGradient2" xlink:href="#linearGradient1"/>
 </defs>
 <rect x="0" y="0" width="128" height="128" fill="url(#linearGradient2)" stroke="none"/>
</svg>
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The image rendered by Inkscape has a 1-pixel-wide border with the first color on the left, while the rest is filled by the other color.(See attachment)
This file can be render normally on my computer with Google Chrome 26(i.e. Webkit).
If I place the attributes in linearGradient2, the image behaves correctly again.

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W3C Recommendation

http://www.w3.org/TR/SVG/pservers.html
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13.2.2 Linear gradients
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xlink:href = "<iri>"
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Any ‘linearGradient’ attributes which are defined on the referenced element which are not defined on this element are inherited by this element.
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