<p>The InputManager initially assumes the mouse is being used and sets the last mouse used time&nbsp;to the current time when it's created on startup. This causes the home screen to perform a pretend mouse move when it's first shown if the time between the InputManager being created and the screen being shown is less than MOUSE_CONTROLS_TIMEOUT (5 seconds), the mouse move event can then cause the focus to change unexpectedly.</p>

<p>Given that the event isn't consistently fired anyway, i.e. it's not fired if startup takes longer than 5 seconds, and it can cause issues with focussing, change the InputManager to assume&nbsp;the mouse isn't being used on startup.</p>