When you drag the slider bar on the slider component, the value of the component will only be propagated when the mouse button is released. This is probably good enough in most cases, but in our case we need these events to be pushed while the bar is being dragged. We will be using light processing for these event, but it might be an idea to leave the propagation style as an option on the component. This way you won't be flooded with events in situations where you need to do heavy processing based on the updated slider value.