You can control hiding and showing targets of a Mouse Event Action using the Layers panel.
- When you select a trigger (the element with the action on it) on the stage or in the Layers panel, its target elements are highlighted with a red dashed line in the Layers Panel. Click the Show icon in the Layers list to display the hidden target elements on the stage.
- If you explicitly show any of the hidden target elements in the Layers panel, they will not hide when you deselect the trigger element.
You can use the Hide Targets feature in the View tab (View tab > Workspace > Hide Targets] to hide all mouse event targets, cleaning up the authoring stage if you have highly interactive pages.