In my scenario, the TileLayout has only one column, so the user can only reorder the tiles vertically. For example: https://blazorrepl.telerik.com/mpYQGSbu17n4iUaE11.
Based on the current behavior, for example, to drag tile 1 under tile 2, you must drag the tile to one of the following zones to free up space on which you can drop the tile:
The zones in question are marked in red here:
When the TileLayout has only one column, I think it would be more intuitive if one can drag a tile to the vertical middle of the tile you want to replace and then the space is freed up. The suggested zone is marked with green here: