When a component is removed from the Prefab instance and it is unpacked then "Components label (Removed )" appears in the inspector. It disappears when anything else from the editor is selected

Steps to reproduce:
1. Create a new project.
2. Hierarchy > Cube & Create a prefab of it.
3. Hierarchy > Cube > Remove any component (Ex. BoxCollider)
4. Hierarchy > Cube > Right-click > Unpack Prefab

Actual result:
"component's label removed" appears on removing it in the prefab instance even if it is unpacked

Expected result:
Component is removed when prefab instance is unpacked

Reproducible in:
2020.2.0a18, 2020.2.0a4

Working fine on:
2020.2.0a3, 2020.1.0f1, 2019.4.5f1

Environment:
Occurring on Windows 10 & macOS 10.15