My Dashboard.php and my Widget is all set up correctly to use the new v3.1.0 dashboard filter function. In my widget file with DebugBar I can see that $this->filters change correctly, but for some reason the widget itself doesn't refresh. Once I refresh the full page, it displays the correct filtered data.
The docs say: "When the filters are updated, the widgets will be reloaded with the new data."
I believe there is a bug with this part.