Hello! Since unity 2018.1.0f2 the tile palette doesnt show the tiles in it's window. If this could help What I tried to do: Creating new tile palettes Creating new tiles Reimporting all assets Removing tile maps in the scene and adding new ones Disabling and enabling the tilemap render component Changing the grid cell swizzle Closing and opening the tile palette window The tiles are present in the tile palette (the inspector shows me that if I click on their cell), but there is no preview. (The tiles are showed in the scene and there is their preview in the project window) Any suggestion? Thank you and have a nice day!