a bug for the sandbox

1.I click one of the buttons in the window of the automatically sandboxed process.

2.After that, it starts the IE8.

3.But, the IE8 is not sandboxed by CIS.

4.environment:
Windows XP SP3 32bit

IE8

https://valkyrie.comodo.com/Result.html?sha1=067a7b5d0750a71fbdcf5a009e456b95f0655542&&query=0&&filename=QQ.exe