Detached Preview Window doesn't display name of the selected model, Refer attached gif

Steps to repro:
1. Create a new Project
2. Import "Winston - iClone Character" from Asset Store
3. Project > Assets > Winston > Meshes > Winston
4. Select Model in Inspector
5. Right-click the Winston Preview Window title to detach it from the inspector

Actual Result:
Model name disappears

Expected Result:
The model name appears even if Preview Window is detached

Reproducible in:
2020.1.0a5, 2019.3.0b4

Working fine on:
2019.3.0b3, 2019.2.6f1

Environment:
Windows 10 & Mac 10.14