Timeline - Zoom won't fill in culled data

I'm using the Vaadin Timeline widget embedded within the Chart add-on package.  By default, the Timeline will cull the data to reduce the amount of data displayed.  In general, I'm happy with the selection of culled data, especially using the Advanced reducing algorithm.

The problem occurs when I zoom in on the data either using a zoom preset or manually using the browser.  The zoom works properly, but no new data is displayed.  The graph just uses the same set of culled data.  I'd like it to fill the zoomed region in with some of the points that it culled out when all of the data was displayed.

Is there any way to get this to happen?  Any help would be appreciated.