Unity Why when I create new tiles and drag the tile set in the palette it's merged together?

Question

Unity 2D Game, Why when I create new tiles and drag the tile set in the palette it's merged together, like in the image?

my palette

tileset images

Here my palette must show the tile set like this!

user_19564705 · Answer

From the tileset, go to the sprite editor, open the 'Slice' menu and then check 'Keep Empty Rects'.