The TileLayout is currently not responsive and the column count isn't relative to the screen size;

Currently the columns shrink to fit the screen, whereas a desired behavior is to change the layout to accommodate for only one column on mobile device screens. 

A temporary solution shown in this dojo - https://dojo.telerik.com/iLOmETAR/2, however this workaround is not fully compatible and might break the reordering and resizing of items.