To reproduce:
1. Open attached Unity project "MultiSpritePreview.zip"
2. Go to Assets --> Prefabs
3. Click on one of the prefabs, then hold ctrl and click on another prefab
4. Check sprite preview in the Inspector

Expected result: an appropriate sprite should be shown above its prefab name
Actual result: the sprites have overlapped and look completely the same (Check user's attached gif "multi-sprite-preview-overlap.gif")

Regression first introduced in: 2017.2.0b7
Reproduced on 2017.2.0b7, 2017.2.0b10
Not reproduced on: 5.6.3p2, 2017.1.1f1, 2017.3.0a7