When probuilder window is placed near the corner of the screen, and the mouse cursor is hovered over tools, Tooltip appears clipped

Steps to reproduce :
1. Create a new project.
2. Window > Package Manager > ProBuilder > Install
3. Tools > ProBuilder > ProBuilder Window
4. Hover mouse cursor over tools.

Actual results: Toolbar tooltip appears clipped.

Expected results: Toolbar tooltip appears properly.

Reproducible with: 2020.1.0a19, 2019.3.0f4, 2018.4.14f1,2018.1.9f2

Note: Package Manager was introduced in 2018.1.9f2, Checked with older ProBuilder package 3.10.1 also.

Environment: Occurs on Windows only.