Take the example attached and export it as PDF. You will see that the curve gets out of the figure in the PDF file.
Created attachment 268341 [details] SVG example file
Created attachment 268351 [details] PDF file exported by Inkscape and exhibiting the bug
Opened a ticket upstream https://bugs.launchpad.net/inkscape/+bug/173423 All of top 10 reported bugs in inkscape are PDF-export related.
Thanks, Lubomir. Paul
Paul: there is a new comment in Launchpad -- maybe your answer there will be better than mine :)
(In reply to comment #5) > Paul: there is a new comment in Launchpad -- maybe your answer there will be > better than mine :) Thanks, Lubomir. I have just posted a comment in Launchpad. Paul
Should be fixed upstream. They don't seem to care much though.