Reset functionality is not working for playable director component

Steps to Repro:
1. Create a new project
2. Create an empty game object
3. Add component > playable director
4. Change few properties in it
5. Click the gear icon and hit the reset

Actual Result:
Observe that the properties are not resting to default

Expected result:
On hitting reset values should return to the default, that is the values when the component is newly added

Environment:
Windows and Mac

Occurring with:
2018.3.0a6, 2018.3.0a5, 2018.2.0f2, 2018.1.6f1, 2017.1.4f1