Your lens design is not the only thing that affects diffraction, which is what produces sun stars or sun spikes.
Everything between the Sun and your camera that the light from the sun interacts with can diffract light and affect the results.
The shapes and sizes of the pine needles and branches of the tree between your lens and the sun will also play a role.
I think the key to the correct answer is "What did you expect to see?".
For example if you take a shot of a completely green wall with auto white balance:
Do you expect the wall photo to be more green or more gray?
Auto white balance does not understand what it "sees": It will try to find some "white" and use that as a base.