Tooltips are missing for all properties under the Actions panel:
Tiling & Alignment, Fill Mode, Anchor, Flip U, Flip V, Offset, Swap U/V, refer attached video.

Steps to repro:
1. Create a new project.
2. Window > Package Manager > ProBuilder > Install
3. Tools > ProBuilder > ProBuilder Window
4. Create a "New Poly Shape"
5. Select Face Selection tool in the Scene View
6. ProBuilder window > UV Editor > Actions Panel

Actual Result:
Tooltips are missing

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

Occurring on:
2020.2.0a19, 2020.1.0f1, 2019.3.15f1, 2019.2.13f1, 2019.1.11f1, 2018.4.24f1

Package found version: 4.4.0-preview.1, 4.3.1, 4.2.3, 4.2.1, 4.1.0, 4.0.2, 3.0.0

Environment:
Windows10 and macOS 10.14