How to reproduce:
1. Open user project.
2. Open scene "broken".
3. From Assets > bug folder drop "working" prefab into hierarchy.
4. Expand "working" and click on "effect_no_prewarm".
5. Simulation starts and plays correctly.

6. Repeat the process with "broken" prefab.
7. Simulation does not start.

Expected: particle simulation starts when clicking on particle object.
Actual: particle simulation "timer" does not start.

Reproduced on: 5.4.0f3, 5.4.0p2, 5.5.0a6
Not reproduced on: 5.2.4f1, 5.3.5f1, 5.3.6p3.
Simulation timer starts but no particles are visible. Stopping and launching simulation again works.