Besides its fully customizable appearance, the progress bar addon provides interesting option for setting the progress to show.
On the drop-down list on Behaviour, when you choose the option Single video, the progress bar will show the progress of every video conforming your project individually. That is to say, if your thirty-second full project is composed of three ten-second videos, the progress bar will reach the end three times with this behaviour, one for each video comprising the full project.
The Behaviour drop-down list also allows you to choose the option Full PlayFilm, so that the progress bar behaves in a regular way. That is, showing the progress of the full video, the full PlayFilm, which is to say, following the previous example, the moment of the thirty seconds where we are.