Public bug reported:

Binary package hint: inkscape

The 'feGaussianBlur' tag have a 'stdDeviation' attribute which seems to
have a bug. Inkscape and Eye of GNOME seems to render it incorrectly in
some circumstances.

stdDeviation="4" renders and should render.
stdDeviation="4,4" renders and should render
stdDeviation="4,0" renders but should it really render?

http://www.w3.org/TR/2007/WD-SVGFilter12-20070501/#feGaussianBlurStdDeviationAttribute
"A negative or zero value disables the effect of the given filter primitive 
(i.e., the result is a transparent black image)."

Both Inkscape (0.46) and Eye of GNOME (2.22.2) seems to be affected by
this bug in the same way. Mozilla Firefox (3.0~rc1+nobinonly-
0ubuntu0.8.04.1) is not affected by this bug. (unless its the other way
around)

Compare the rendering of the attached file in Inkscape and Eye of GNOME against 
the rendering in Mozilla Firefox.
Notice that it renders a shadow in Inkscape and Eye of GNOME.
Notice that it does not render a shadow in Mozilla Firefox.
If you change stdDeviation from "4,0" to "4" or "4,4" notice that it then does 
renders a shadow in Firefox.

** Affects: inkscape
     Importance: Undecided
         Status: New

** Affects: eog (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: inkscape (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: eog inkscape svg

-- 
stdDeviation bug in SVG renderer
https://bugs.launchpad.net/bugs/236585
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