EPS-Output creates unwanted rectangles

When outputting certain lines to eps, there appear new lines in the output file which are not part of the original drawing.

Reproduce: Use the "Sequence of straight line segments" Tool (Shift + F6) to draw a shape like
_
_|

or
 _
|_

where the end points exactly line up on a (virtual) vertical line (use the grid and snap). When outputting these shapes to eps, there will appear another vertical line which connects the two end points so it looks like a rectangle.

In the attachment there is a svg file containing sample shapes and an eps file that demonstrates the effect. Furthermore, the snapshot shows the settings for eps output.

My current workaround: Move one of the end points slightly, so they no longer exactly line up vertically.

Inkscape: 0.48
Distribution: openSUSE 12.1 (x86_64)
KDE: 4.7.2 (4.7.2) "release 5"