1. Create an new project using Unity 2021.3.12f1,
2. Import Behavior Designer.
3. Add Behavior Tree component to main camera.
4. In the Project Settings/Editor, check "Enter Play Mode Options", uncheck "Reload Domain", check "Reload Scene".
5. Click "Open" button in the Behavior Tree component...
When enable "Enter Play Mode" in Unity settings.
BT visaul editor won't update it self, untill click it's window or other BT gameobject.
Unity version: 2022.2.0b13