I set my tile pallet by dragging in a single spritesheet. When I paint my tiles in the editor they all look great. However when I run the game, every 4th tile shows a single pixel from the sprite to the left (as it appears on the sprite sheet). The sprite sheet is imported with Filter Mode set to point and I have turned off Anti-Aliasing. If I do not use the tilemap and add the sprites individually (in the traditional manner) then they do not exhibit the same issue. Why on earth is it doing this?