Spawned prefab entities incorrectly displayed in blue instead of white in the new Hierarchy

Steps to reproduce:

1. Open HelloCube_Prefabs scene, open the subscene
2. Enter play mode
3. All new spawned prefab entities names are not displayed in blue but white

Actual results: Prefab entities should be displayed in blue

Expected results: They are displayed in white
Reproducible with versions: 6000.6, 6000.5

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): Mac OS