Expandable Row not visible (spinner shown instead)

The expandable row gets into an invalid state not showing the expandable row template and showing a spinner instead.

It can be reproduced on the UI Grid tutorial page by expanding a couple bottom rows:

Go to expandable grid tutorial page: http://ui-grid.info/docs/#/tutorial/216_expandable_grid Scroll to the bottom and expand the last row, 499, by clicking on the '+' sign. Start scrolling down to see the content of the expanded row. Notice that the expandable template does not appear and a spinner appears instead. Example from the tutorial.