An event is emitted from a toy. On the scene, on collide the event is called with a goto scene attached to load the same scene. In the actual scene all is fine, if there is only one of these toys in a scene (the screen is only reloaded once), but if the toy is duplicated then the scene is reloaded twice.
Which game and which scene do you see this problem?
On the emit event, tick only for this entity. Make sure the on event is a child or
somewhere in the chain in relation to the emit event.
See if that works