title: ADDED_TO_STAGE event doesn't seem to work as I thought
body: <p>I need to display a message for the user before a CPU hungry function starts. I start that function after the ADDED_TO_STAGE event is fired but half of the time, message box doesn't have enough time to be displayed when that heavy function starts. Is there any other way to make sure a message box is displaying before a heavy function starts processing things?</p>