Emission plane is casting a shadows in cycles My emission objects (which are flat planes) are casting shadows parallel to their faces. Rotating the planes causes the shadow line to move but not to diffuse.

Blender screenshot:



Render with shadows:



Under Cycles Settings I have tried turing off shadows for both the emission objects and the ground, but the shadow is still there. What do I have to do to fix the issue?
They are not casting shadows, they only emit light from the faces, not form the edges. You can try to extrude the faces, but even so, the faces on the edges won't emit enough light to match the one coming from the front and back faces.