Prevent close window on focus out for particular apps

[lascarayf]

I replaced the XFCE terminal in "dropdown" mode with "Guake" and I am very satisfied mainly because I can do screen splits.

The only problem I'm having and it didn't happen to me with the XFCE terminal is that when I want to open the clipboard manager window (ClipIt) to paste something in the terminal, Guake detects a window change and closes itself. The behavior is correct but I would like to make an exception for that specific case (as XFCE does).

Any idea how I can achieve this?

Thank you very much