When Tile palette is in Edit mode and Tiles are selected using selection tools then the selected tile area doesn't highlight, refer attached video

Steps to repro:
1. Create a new project with 2D Template
2. Window > 2D > Tile Palette
3. Create a new Palette
4. Paint tiles using a sprite
5. Click on "Edit"
6. Select multiple tiles using "Selection tool (S)"

Actual Result:
Selection box does not appear on selecting multiple tiles

Expected Result:
Selection box appears clearly on selecting multiple tiles

Reproducible on:
2020.1.0a10, 2020.1.0a8

Works fine on:
2020.1.0a7, 2019.2.0b8

Environment:
Windows 10 & macOS 10.14