The SceneViewer and SceneExplorer windows are shared among plugins to save system resources. This means that you will have to keep an eye on what plugin is using the scene right now and what you are actually modifying in these windows.
The OpenGL window and the SceneExplorer window are shared among plugins to save system resources. This means that you will have to keep an eye on what plugin is using the scene right now and what you are actually modifying in these windows.