1. Open a project.
2. Go to Design mode.
3. In the lower right corner, toggle the small arrow so that progress details will be shown.
4. In the right pane, select Projects view.
5. Build the project.
   You'll see a progress bar:
   
6. In the right pane, select Properties view.
7. Build the project.
   You won't see a progress bar:
   

None of the views should hide the progress bars.