Comment 1 for bug 737731

This bug affects me as well. However, instead of seeing nothing as the OP, the selected text is replaced by a (seemingly unrenderable) character (but it's not in the clipboard). See the attached screenshot

$ apt-cache policy unity
unity:
  Installed: 3.8.12-0ubuntu1
  Candidate: 3.8.12-0ubuntu1
  Version table:
 *** 3.8.12-0ubuntu1 0
        500 http://gd.tuwien.ac.at/opsys/linux/ubuntu/archive/ natty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.8.10-0ubuntu2 0
        500 http://gd.tuwien.ac.at/opsys/linux/ubuntu/archive/ natty/main amd64 Packages