I have a case where I want some tiles to span multiple columns and different rows, so I implemented the RestoredTilesToSpanMultipleRowsAndColumns example that is frequently posted here (https://github.com/telerik/xaml-sdk/tree/master/TileView/RestoredTilesToSpanMultipleRowsAndColumns). However, after implementing it I see that the maximize button no longer works - the example sets MaximizeMode to "Zero" because it doesn't do anything. How can I restore that functionality?