Tooltips are missing for all properties under Tier Setting window, Refer attached video

Steps to repro:
1. Create a new project
2. Edit > Project Settings > Select
3. Project Settings Window > Graphics > Tier Setting > Open Editor
4. Hover mouse on properties under Tier Setting window

Actual Result:
Tooltips are missing for all properties under Tier Setting window

Expected Result:
Tooltip appears when the mouse has hovered on the properties

Occurring on:
2020.2.0a18, 2020.1.0f1, 2019.4.0f1, 2018.4.23f1, 2017.4.40f1

Environment:
Windows10 and macOS 10.14