If you scale the graphics transform down far enough then the lines will start
to disappear. First they will separate into multiple chunks as if they were
dashed and finally they will disappear entirely.
There should be some sort of minimum line width below which no line will ever
scale so that thin lines never disappear.
BugTraq+ Release Management Values
COMMIT TO FIX:
We now invoke the Ductus stroke rasterizer with dropout control for all
pipelines when dropouts may be a problem...