Non-centered connection progress sheet dialog when supplying
the connection parameters to JConsole in the command-line.

In order to reproduce the problem run jconsole as follows:

<jdk>/bin/jconsole localhost:0
<jdk>/bin/jconsole 12345
<jdk>/bin/jconsole service:jmx:rmi:///jndi/rmi://localhost:5555/jmxrmi