When creating a branching survey, the previous button doesn't work as expected. Clicking the previous button goes to the previous page in the list, and not the previous page in the branch.

Eg:
Pages:  Q1 > Q2a > Q2b > Q2c > Q3.

The survey branches from Q1 to Q2a, Q2b, or Q3c depending on the answer given. However when the user jumps from Q1 to Q2c and then click the previous button, it goes to Q2b instead of Q1.