Grid View in the scene is distorted for Hexagonal Tilemap when the editor is in 3D mode on MacOS

Steps to Reproduce:
1. Create a new project
2. Hierarchy > Create > 2D Object > Tilemap
3. Select Grid from Hierarchy > Cell Layout > Hexagon
4. Make sure that 2D from is Scene View is not selected

Actual Result:
The grid in scene view is distorted in 3D mode.

Expected Result:
Grid view in the scene is in hexagonal shapes even if the editor is switched to 3D mode

Reproducible on:
2019.2.0a4, 2019.1.0b3, 2019.1.0a13

Not Reproducible on:
2019.1.0a12, 2018.3.0f2

Environment:
Only on MacOS

Note: Refer attached video.