When editing a Widget, the middle part of the window contains a live Widget preview.
Every time you make a change to the Widget configuration, the Widget Preview is refreshed to reflect that change.
This preview is interactive and can be used to show tooltips, click to drill-down, or scroll to zoom on maps.
Refreshing the Widget Preview
This Widget Preview can be manually refreshed using the refresh button in the top bar :
This makes a new query to the data, and refreshes the preview.