/tmp/unity-support-test.0 isn't relevant at all in that case.
Ok, so unity-2d receives a BadWindow error in your configuration and it seems it's not linked at all at the user data in their home directory. I'm pretty sure unity-2d should crash, do you have nothing in /var/crash/*unity*2d* ? If so, can you please apport-collect the crash and attach it to this bug?
Thanks for the additional information Thomas,
/tmp/unity- support- test.0 isn't relevant at all in that case.
Ok, so unity-2d receives a BadWindow error in your configuration and it seems it's not linked at all at the user data in their home directory. I'm pretty sure unity-2d should crash, do you have nothing in /var/crash/ *unity* 2d* ? If so, can you please apport-collect the crash and attach it to this bug?