Trans-releases cut buffer problem

[Bill Allombert <allomber@math.u-bordeaux.fr>]

Hello X Strike Force,

I have a problem involving cut buffer.
My Xserver run on woody (but it is backport of 4.2.1-3).

I use 
xcb -S 1 && xcb -p 1 
to display the content of the cut buffer.

This work fine with the woody version.
However inside a sid chroot, I get

X Error of failed request:  BadAtom (invalid Atom parameter)
  Major opcode of failed request:  24 (X_ConvertSelection)
  Atom id in failed request:  0xa
  Serial number of failed request:  13
  Current serial number in output stream:  13

(though chrooted program can access the X server without problem).

Before reporting the bug, I would like to know if someone can reproduce
it with a more standard set up.

Any idea what is the cause of the problem ? X11 is known for almost 
unlimited amount of compatibility.

Cheers,
-- 
Bill. <ballombe@debian.org>

Imagine a large red swirl here.