I use html and css2/3 inside textfield to make buttons and hotspots more interactive and pretty.
I've noticed that in latest player version :hover pseudo-class in css does not work for div-s inside textfield.
Here's an example running correctry on 18.5. I also have put tour.js of 19.8 which doesn't work.
https://dl.dropboxusercontent.com/u/20987610/textfield-art.zip?dl=1