Reproduction steps:
1. Open project in "case_1207573-Bug_Test.zip"
2. Open "Scene.unity"
3. Notice that Particle System uses Sort Mode "By Distance" and Render Alignment "View"
4. Notice that Particle System Velocity Over Lifetime Module has 0 Velocity on Z-Axis
5. Notice that Camera uses Projection "Perspective"
6. Enter Play Mode

Expected result: since Particles are aligned by View, Rendering Order for already existing Particles does not change
Actual result: Rendering Order for already existing Particles changes if one Particle's Distance to Camera becomes larger than the other's due to movement

Reproducible with: 2017.4.36f1, 2018.4.15f1, 2019.2.18f1, 2019.3.0f5, 2020.1.0a19

Notes:
1. The easiest way to notice Render Order Changing is to pause the game and move the Camera Manually
2. Increasing Camera FOV might help notice the issue faster