Bug#966423: inkscape: Copy & Paste of objects is broken

[Alex <allo@laxu.de>]

This happens in every document for me.

- Open Inkscape
- Create a rectangle
- Try to copy & paste it.

> however, this error message is known:
I am not sure if those are useful. The error looks like it belongs to
some smart pointer library or something similar and isn't too helpful
except someone knows which pointers may be the problem when copying/pasting.

I can see if I should open an issue, I am just thinking if it affects
upstream it would be already known. Is the Debian testing package a
release or a snapshot from the upstream?

I'd like to test 1.0-4 soon, but I cannot get it from Debian unstable
without installing a lot more unstable packages.