Having Space Navigator in project breaks middle click to focus in SceneView

[hybridherbst]

Describe the bug Having Space Navigator in project breaks middle click to focus in SceneView. Usually middle click will move the view and re-center on the clicked point. With this active, middle click does something but doesn't recenter the view.

To Reproduce Steps to reproduce the behavior:

1. Create a scene
2. Make two cubes with a bit of distance
3. Middle-click one cube, note camera doesn't recenter
4. Middle-click the other cube, note camera doesn't recenter
5. Open ViewportController.cs
6. in the static ViewportController() constructor, add return; as first line
7. Repeat the test above
8. Note that the camera properly recenters

Expected behavior Scene View behaviour is unaffected by package

Details (please complete the following information):

• Issue occurred while navigating editor viewports
• Device type [All]
• Connection [wired]
  • OS: [e.g. Windows]
  • SpaceNavigator Driver version [e.g. 2.0.0-beta.7]

Edit: Might have the same reason as the drift seen (#29), since it seems that the comparison for == Vector3.zero fails since the inputs are actually never fully zero (this is in idle state): A better way to react to input would be to actually listen for the InputAction.performed event instead of polling every frame and not knowing if data has actually changed.

[PatHightree]

Good find, apparently there's some camera positioning data being cached in the driver somewhere. Had a quick look but didn't see anything obvious.