Description of problem:
When there are the pages [a,b,c,...] and you are on page a and press F2 to drop to shell, then - when you return - you will be on page b. Later on the installation fails because the method ([update, install, reinstall] which is determined on the first page) is missing.

Version-Release number of selected component (if applicable):
master

How reproducible:
always

Steps to Reproduce:
1. In installer first page, press F2
2. Return from shell
3. You are now on the second page of the installer