Control Wards don't disable Shaco's boxes
If a control ward is in a bush and a jack in the box is next to the bush, the control ward neither reveals nor disables the box until the box triggers, at which point it fires once before being disabled.
If a control ward is in a bush and a jack in the box is next to the bush, the control ward neither reveals nor disables the box until the box triggers, at which point it fires once before being disabled.
Also it sometimes disables a few but not all of them.
@Pink Ward's channel.