Reproduction steps:
1. Open the project attached by the user
2. Zoom in on the Game View using the Scale slider
3. Enter Play mode
4. Observe the edges of the particles

Expected result: The edges of the particles are sharp, no different colors than the particle itself are seen
Actual result: The edges of the particles seem to bleed some light cyan color

Reproducible with: HDRP 10.1.0, 10.2.0, 10.2.1 (2020.2.0b12, 2021.1.0a7)