Steps to reproduce:
1. Open “RandomSeed.zip” Unity project
2. Open “Example” scene
3. Select “Particle System” object in Hierarchy
4. Change Particle System component Random Seed value to ‘99999999’
-‘99999999’ will be changed to ‘100000000’

Expected results:
Random Seed value is the same as the value that was entered
Actual results:
Random Seed value changes and is not the same as the value that was entered in the field

Reproduced in: 2018.2.0a1, 2018.1.0b7, 2017.3.1p1, 2017.2.1p4, 2017.1.3p1, 5.6.5p2, 5.6.0a1

Fixed in: 2018.2.0a6