In the Gradebook, if you try to switch to the Individual View, the Gradebook will refresh, and you'll need to repeat the process to switch over. The same thing happens returning to the gradebook from the Individual View.
The Gradebook and Individual View should switch back and forth on the first click.
Steps to Reproduce
Go to Gradebook in a course.
Click on Gradebook on the upper left, then Individual View. Notice the page refresh.
In individual view, do the same process to go back to the Gradebook, and notice the behavior from that side as well.