When you place shadow behind the angled tiles or you're making a map that includes shadow tiles for playing, sometimes it bothers because these tiles use simple invisible block collision and you have to set all AlterCollisionTile settings to FFFF.
You once added a good thing - placeholder, which i place behind the shadows mostly to let it be "same collisioned"
Wouldn't it be great if all the shadows would have more smoother collisions like on placeholders?
