1. What happened
ParticleSystem with Subemitter produces IsFinite errors to console.

2. How we can reproduce it using the example you attached
- Open scene 1
- Few times Play/Stop the scene
- Few times Simulate/Stop the PS
- Select/deselect the PS
(Last 3 steps may need be repeated in different order. But overall it requires no longer than 30 seconds to repro. See attached videos.)
---> Error will be printed to console:
IsFinite(outDistanceForSort)
UnityEditor.DockArea:OnGUI()

Sometimes accompanied by others about 'Invalid AABB' and similar.

Regression from 5.3.1p1