Node input field does not hide when property connects to that input.

Steps to reproduce:
1. Create a new project.
2. Go to Window > Package Manager > Shader Graph(Ver-6.5.3) > Install
3. Right-click in project window > Create > Shader > PBR Graph.
4. Click on Open shader Editor button in the inspector.
5. Click '+' button on Blackboard.
6. Select Vector2 property from the list and set X and Y values (Ex. 3,4).
7. Drag and drop Vector2 to the blank area in the shader graph window.
8. Connect Vector2 property with PBR Master Metallic input.

Node: Video is attached for the reference.

Actual result:
Node input field does not hide when property connects to that input.

Expected result:
Node input field hides when property connects to that input.

Reproducible with Shader Graph Package version: 6.5.3, 6.5.2

Not reproducible with Shader Graph Package version: 5.13.0

Environment: Windows and Mac.