In order to prevent performance issues with your web browser, our live view will show only a sample of data after the browser's capabilities have been reached. If there are performance issues our live view cannot show all search, copy, click or share events for our most active publisher sites. If there are more than 1000 events we will only show 50% of the number over 1000. For example if you have 1200 events we will show you 1100 events - the first 1000 plus 100 randomly selected events.
This is only an issue for our very largest publishers, and we will be working hard to optimize our experience.