[Physics 2D] Reset functionality is not working for EdgeCollider2D

Steps to Repro:

1. Create a new Project
2. Create a new GameObject
3. Select GameObject > Inspector > Add Component > Edge Collider2D
4. Click on GameObject > Inspector > Edge Colllider 2D > Edit Collider
5. Make some changes in the EdgeCollider2D
6. Click on Cog Wheel > Reset

Note: This happens with Polygon Collider2d as well

Actual Result: A single line remains in the scene apart of the original Edge Collider line

Expected Result: Edge Collider 2D resets

Reproducible on: 2019.3.0a3

Working Fine on: 2019.3.0a2, 2019.2.0b2