1. Launch Application. 2. Create a new project. 3. Drag and drop a CCPhysicsNode. 4. Drop two physics bodies under it. one static and the other one dynamic. 5. Select the static physics body and change its physics shape into circle and corner radius= 0. 6. Arrange both bodies in such a way that the dynamic body collide with the static body. i.e. dynamic body on top of static body. 7. Publish the project, build and run it on XCode. --Result: Static Physics body still collides with other physics body when user changes its physics shape to circle and its corner radius to 0. SB Version: Latest Develop Branch (2.0) SB Revision: 3c4db042ec Mac OS 10.10.0 XCode 6.1 Video:https://drive.google.com/file/d/0B5-RfBatv-b8c3BDbDdrTzUzODg/view?usp=sharing