When a blackboard window is dragged towards the top of the VFX window, the title of the blackboard window clips, refer attached video

Steps to repro:
1. Create a new project
2. Windows > Package Manager > Visual Effects Graph > Install
3. Project > right-click > Visual Effects > Visual Effect Graph
4. Project > New VFX >Open .
5. Drag Blackboard window to the top of the VFX graph window.

Actual Result:
Title of Blackboard window overlap with VFX graph window While Dragging Blackboard window

Expected Result:
Blackboard window title name visible clearly While Dragging Blackboard window.

Tested with Unity version
2020.1.0a20, 2019.3.0f6, 2019.0f1, 2019.3.0a12

Package Found version: 7.1.8, 7.1.7, 7.1.5, 7.0.1

Environment:
Windows 10 & macOS 10.14