Editor crashes on clicking Pack Preview when same atlas is added in Packables in debug view

Steps to Reproduce:
1. Create a new project or open attach project
2. Right-Click in Project window > Create > Sprite Atlas
3. Select Sprite Atlas by clicking on it
4. Inspector > Click on Burger Button > Change inspector to Debug view
5. Drag the same sprite atlas into Editor Data > Packables array
6. Inspector > Click on Burger Button > Change inspector to Normal view
7. Click on Pack Preview

Actual Result:
Editor crashes on clicking Pack Preview button

Reproducible on:
2019.1.0a12 (5aef5b61e109), 2019.1.0a11, 2018.3.0f1, 2018.3.0b12, 2018.3.0a5

Works on:
2018.3.0a4, 2018.2.0f2

Environment:
Windows & Mac

Note:
1. Find attached file to see error thrown just before crash
2. You can add different types of assets to this array in debug mode, which should also not be allowed