Override indicator (It's a blue line which comes next to the edited property and the property name being bold) won't show on changing any of the property types through the drop down in the particle system

Steps to Repro:
1. Open attached or create a new project
2. Hierarchy window > right click
3. Effects > particle system
4. Drag the particle in the project window to create its prefab
5. Go to its base module and click on the drop-down arrow for start speed property
6. Set it to curve or random between two constants

Actual Result:
1. Override indicator won't show on changing any of the property types through the drop down in the particle system
3. Note that the changes are visible in overrides window but not reflected in the inspector
2. On changing the property type second time shows the override indicator in the inspector

Expected Result:
The indicator should show in the inspector when the property type is changed

Environment:
Windows & Mac

Occurring with:
Version 2018.3.0a4 (e10bd691e1ef)
Mon, 25 Jun 2018 15:31:25 GMT
Branch: prefabs/improved