Button Disappears When Revisiting Slide

Thanks Emily,

It works in the example, but not in my build.  I may be going to complex with the state changes. 

Here is a scaled down version of what I am building.  The issue now is once you hover over the button, then move your mouse away from the button, the text disappears on the first slide.  When you click the button to go to the next slide and then return by hitting the home button it looks like it works.  Once you move your mouse over the object it disappears.  It's confusing why the multiple issues.  I may just go with a shadow hover state and leave it on when it changes to visited to work around the issue.  I'm confused by this one. 

Thanks for the help though!