All properties under "Multiply Node" get distorted while selecting settings dropdown on adding or modifying Properties under Subgraph Window, Refer attached video

Steps to repro:
1. Create a new project.
2. Windows > Package Manager > Visual Effects Graph > Install.
3. Project > Packages > Visual Effect Graph > Editor > Templates > Open Default Subgraph Block.
4. Blackboard > Right-click > Create Node > Multiply (Math Arithmetic)
5. Click "Settings" icon on the Multiply node

Actual Result:
Multiply node properties get distorted

Expected Result:
Multiply node properties are clearly visible

Reproducible in:
2020.1.0a5, 2020.1.0a1

Working fine on:
2019.3.0b4, 2019.3.0a10

Package Version found: 7.1.1, 7.0.1

NOTE:
Visual Effects is introduced in 2019.3.0a10.

Environment:
Windows 10 & macOS 10.14.