Reset Functionality doesn't work for Canvas and Canvas Renderer.

Steps to repro for Canvas:
1. Open a new project.
2. Gameobject > UI > Canvas.
3. Change the Render Mode value
4. Click on Cogwheel > Reset.

Properties also do not reset for Canvas:
1. Additional Shader Channel.
2. Pixel Perfect.
3. Sort Order.
4. Target Display.

NOTE: Cull Transparent Mesh property is not getting reset for Canvas Renderer.

Actual Result:
Render Mode property value does not reset for Canvas.

Expected result:
Render Mode property value should reset for Canvas.

Reproducible on:
2019.1.0a5, 2018.3.0b7, 2018.3.0a1, 2018.2.8f1, 2018.2.0a1, 2017.4.12f1.

Environment:
Windows and Mac.