I can't reproduce such scenario in Edge Animate: the large box has mouseover trigger, on mouseover the button appears - after click, the page opens. On box mouseout, the button disappears.
The problem is that when the mouse leaves grey area, mouseout event fires. If I put the layer with button below the large transparent box, button stays visible, but click event doesn't work.
Mac OS 10.7.5 Edge Animate CC 3.0 Thank you in advance! cg.