Unable to check/uncheck Outline and Underlay property in material preset asset. Outline and Underlay text is overlapped with the checkbox.

Steps to repro:
1. Create a new project.
2. GameObject > 3D Object > Text - TextMeshPro > Import TMP Essentials.
3. Create a Preset for Material of TextMeshPro Text.
4. Select the Material preset and try to edit Outline and Underlay property.

Actual Result:
Unable to edit Outline and Underlay property.

Expected Result:
Outline and Underlay property should be edited.

Reproducible with Package Version: 2.0.1, 2.0.0, 1.4.1, 1.4.0.

Working Fine with Package Version: 1.2.1, 1.2.0, 1.1.0.

Tested with Unity Version:
2020.1.0a12, 2019.3.0b10.

Environment:
Windows 10 & Mac 10.14.