Steps to reproduce:
1. Create a new project
2. Create a prefab with a Particle System component
3. Open another Inspector tab so you have two
4. Select the prefab asset in Project view
5. Edit checkboxes/dropdowns of the Particle System component in different Inspectors and notice that they do not remain in sync

Expected Result: Inspectors always remain in sync
Actual Result: Inspectors go out of sync after editing checkboxes/dropdowns and resync after editing input fields

Reproduced with: 2019.3.0a5, 2019.3.0a1, 2019.2.0b5, 2019.2.0a12, 2019.1.5f1, 2019.1.0f2
Did not reproduce on: 2019.2.0a11, 2019.1.0f1