[60741-螢幕截圖-2015-12-28-061425.png|60741]
I make a 2D game like Super Mario, and make a ladder jump effect…
When I jump on platform from the stairs, only box collider 2D in B above Platform,Circle Collider overlap Platform collider…
It’s not clear what the problem is here but it looks like the circle entered the platform-effector collider outside of the surface but the box didn’t which is why you get your image.
You can ask the platform-effector to group colliders so that they all work as one collider by using PlatformEffector2D.useOneWayGrouping.