Unable to add item on Resetting the Preset of the SpriteShapeProfile. it is not getting refreshed

Steps to Repro:

1. Create a new Project
2. Install 2D SpriteShape (if not installed)
3. Project > Create > Sprite Shape Profile > Closed Shape
4. Create Preset of the SpriteShapeProfile
5. Click on Preset > Inspector > Sprite Shape Preset > Burger button > Reset

Expected Result:
"+" / "-" or Create Range button should be available

Actual Result: Preset is not refreshed correctly

Work Around: User have to click outside and then come back

Reproducible on: 2020.2.0a10, 2020.1.0b8, 2019.3.10f1, 2019.2.12f1, 2019.1.014f1, 2018.4.22f1

Environment: Windows 10 and Mac 10.14