If more than one tile was set in the "start" layer, the last tile would be selected. Now, the tile is selected at random among available tiles. Also, a message is issued if no tiles have been put on the "start" layer.
If more than one tile was set in the "start" layer, the last tile would be selected. Now, the tile is selected at random among available tiles. Also, a message is issued if no tiles have been put on the "start" layer.