I just noticed a rather annoying issue. I followed the 'swap image on hover' video and everything went perfect. It works like a charm. The problem is that once I have the text there, I can't style it because the moment my mouse leaves the area, the text hides and no styling gets applied!
Here mouse is in the lower-left square.
Here mouse is hovering over the List Style section.
I suppose you could turn off the interactions but every time just to do an edit would be a pita.