Mouse event on Client ignored

Hi guys,
i have a very strange problem.
Starting from the “First person project example”, after some edit i have a very strange bugs (?).

In network debug mode the preimposted function “Right Mouse Click” is activated when i click the right mouse button in server’s window. The problematic is when i click in client’s window, 'cause nothing happens…

If u need more information, just ask.

Thanks.