Text overlaps dropdown arrow icon in Choose Gizmo window.

Steps to repro:
1. Create a new project.
2. Windows > Package Manager > Visual Effects Graph > Install.
3. Packages > Visual Effect Graph > Editor > Templates > Open Default Subgraph Block.
4. Add OrientedBox property > Select OrientedBox property in Blackboard window.

Actual Result:
Text overlaps dropdown arrow icon in Choose Gizmo window.

Expected Result:
The text does not overlap the dropdown arrow icon in Choose Gizmo window

Reproducible in:
2019.3.0a12, 2019.3.0a10.

NOTE:
1. Visual Effects is introduced in 2019.3.0a10.
2. Could not test on Mac due to https://fogbugz.unity3d.com/f/cases/1174796/

Environment:
Only on Windows