Steps to reproduce:
1. Open the attached project "case_1117520_particle_system"
2. Navigate to Project-> Assets-> Scenes and open "SampleScene"
3. Press Play
4. The bug should occur in a few seconds. In some cases, it takes longer than a few seconds, but no more than 20 seconds

Expected results: Particle System Trails work based on Parameters that are set in the Inspector Window
Actual results: Particle System Trails change their size randomly

Reproducible with: 2018.3.0b10, 2018.3.5f1, 2019.1.0b2, 2019.2.0a2
Not Reproducible with: 2017.4.20f1, 2018.3.0b9

Notes: This bug only occurs when the Reflection Probe Type is Realtime and the Refresh Mode is set to Every frame. Trails Parameters must be set to be the same as in the attached photo, Versions higher than 2019.2.0a2 crash. It seems that this issue occurs only on Nvidia GPU's