Comment 0 for bug 1255169

When two nodes overlap they look smaller than a single node,
and when they are selected they disappear.

It seams to be caused by the nodes stroke color being the inverse of the color below it,
when two nodes overlap their stroke color cancel each other out.

It seams to happen when an even number of nodes are overlapping,
three overlapping nodes are displayed the same way as a single node.

When one selects two overlapping nodes,
both the stroke and the fill of the nodes almost cancel each other out.

If one puts a 50% gray background behind the two overlapping nodes,
then the node looks yellow with a very low opacity,
on a white or black background the node is pretty much invisible.

here's an image with the different states and background colors
of single and two overlapping nodes.
http://i.imgur.com/katF0LJ.png

Tested with:
inkscape_0.49~devel+12830+12~ubuntu12.10.1_i386.deb
on linux mint 15 cinnamon 32bit

the command
inkscape -V
results in:
Inkscape 0.48+devel r12830 (Nov 23 2013)

the same thing is displayed (without the date)
in the top right corner of Help > About Inkscape.