When Learn is processing large sets of data such as copying a course, the process takes place in the background so that users do not have to wait until it is completed before going on to another task. It is difficult to know when the process is complete without some type of indicator.
The progress tracker is an enhancement to the user experience that provides a visible indicator that shows processes taking place in the background. This visual indicator automatically appears (there is nothing to turn on or activate) to show the progress of activities such as installing a building block. Progress trackers can take different visual forms, but the intention is to let users know a process is taking place and when it is complete.