Reproduced with Inkscape 0.48.1 and 0.48+devel r10179 on OS X 10.5.8 i386 (both cairo 1.10.2)
Not reproduced with Inkscape 0.47 (cairo 1.8.8), 0.48.0 (cairo 1.8.10) and 0.48+devel r10166 (cairo 1.8.10)
As far as I can tell, the vertical edges of open rectangles get closed only if Inkscape uses cairo ≥ 1.10 (upstream bug in cairo?).
Reproduced with Inkscape 0.48.1 and 0.48+devel r10179 on OS X 10.5.8 i386 (both cairo 1.10.2)
Not reproduced with Inkscape 0.47 (cairo 1.8.8), 0.48.0 (cairo 1.8.10) and 0.48+devel r10166 (cairo 1.8.10)
As far as I can tell, the vertical edges of open rectangles get closed only if Inkscape uses cairo ≥ 1.10 (upstream bug in cairo?).
See also a related thread in 'inkscape-user' describing IMHO the same problem: thread. gmane.org/ gmane.comp. graphics. inkscape. user/13632>
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