missing red stroke in percentages demo in ExampleUnits.svg from w3.org

[Alvin Penner]

the attached file, ExampleUnits.svg, taken from the w3.org website:
http://www.w3.org/TR/SVG11/coords.html#ViewBoxAttribute

does not render correctly, the red stroke on the Percentages boxes is sometimes missing.

- reproduced on Windows XP, Inkscape 0.91+devel r14031 (Mar 24 2015)
- reproduced on Windows 7, Inkscape 0.91 r13725 (Jan 30 2015)

- not reproduced on IE8, using Adobe SVG 3.0 viewer
- not reproduced on IE9
- not reproduced on GIMP 2.8

[su_v (suv-lp)]

Reproduced on OS X 10.7.5 with
- Inkscape 0.47 r22583, 0.48.5 r10040,
- Inkscape 0.48+devel r10325 (old renderer),
- Inkscape 0.48+devel r10326 (cairo-renderer merged),
- Inkscape 0.91 r13725
- Inkscape 0.91+devel r14032

--
Possibly already tracked in an older report (stroke width in percent)

[su_v (suv-lp)]

See also:
* Bug #166725 (sf1243188) “percentage units don't work”
  https://bugs.launchpad.net/inkscape/+bug/166725

(comment #3)

[Alvin Penner (apenner)]

I can no longer reproduce this problem on Windows 10, Inkscape 1.0alpha (9cedb1b, 2019-02-08)