Multiple game objects created with the help of the "ProBuilder Toolbar " are displaying with the same name in the Hierarchy window.

How to reproduce:

1. Create a new project.
2. Window > Package Manager > ProBuilder > Install
3. Tools > ProBuilder > ProBuilder Window
4. Create a "New Shape" or "New Poly Shape"
5. Again Create a "New Shape" or "New Poly Shape" then observe its name displaying in the Hierarchy window.

Actual Result: Multiple game objects are creating with the same name.

Expected Result: Multiple game objects are not creating with the same name.

Tested on Unity version:
2020.1.0a18, 2019.3.0f5, 2019.2.

Package version occurring: 4.3.0-preview.1, 4.2.1, 4.1.2, 4.0.2

Environment: Windows 10 and macOS 10.14.