[IMGUI] "Extent of world bound" button is overlapping with the "World Subdivisions" button in Project settings.

In the Physics setting "Extent of world bound" button is overlapping with the "World Subdivisions" button under Project settings. refer attached screenshot

Steps to repro:
1. Create a new Project
2. Edit > Project settings > Physics
3. Observe the "Extent of world bound" button is overlapping with the "World Subdivisions" button.

Actual Result:
"Extent of world bound" button is overlapping with the "World Subdivisions" button

Expected Result:
"Extent of world bound" button and "World Subdivisions" button are well separated from each other.

Occurring in:
2020.2.0a18, 2020.2.0a12

Working fine in:
2020.2.0a11, 2020.1.0b16, 2019.4.4f1

Environment:
Windows10 and macOS 10.14