Steps to reproduce:

1. Launch application.

2. Select add "+" at the bottom of the screen.

3. Add a routine name and pick a day.

4. Navigate to "Add Exercises".

5. Give an exercise name and press "add".

6. Navigate to "Intensity".

7. Select an exercise and set "sets" and "reps".

8. Select "Save Intensity".

9. Select "Finish".

10. Press the device's Back button.

11. Notice the application returned to the previous screen and did not exit from the first screen.

This error is reproducible 5 out of 5 times.