1. What happened
ParticleSystem API should be consistent with using radians. Currently, Particle.rotation uses Degrees.

2. How we can reproduce it using the example you attached
- Run the scene. There's script attached to PS that sets rotation to 1.1. And emits 1 particle.
- Observe console output for particle.rotation value
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Expected: value should be 1.1 as set in ps.initial.rotation call.
Actual: it is 63 (in degrees)