Wrong collision normals with composite tillemap collider

See more information in this forum post: https://forum.unity.com/threads/wrong-collision-normals-with-composite-tillemap-collider-and-more-weird-things.1338620/#post-8464526

1. Open the project

2. Open the scene SampleScene.unity

3. Jump around by pressing space and see how air and ground are detected correctly

4. Jump against the left wall and see that the detection of ground stops working