Currently the back navigation during the character generation process can be misleading and confusing: If a step is selected to be "chaotic", in 50% of the cases it's executed randomly (selected by Fate) and in 50% of the cases the player can select the specific option (again being able to turn to selection by Fate as one of those options). If you press '-' in a subsequent step you immediately are returned to that step if "selection by Fate" happens. ADOM should memorize the selected specific option for a single sequence and repeat that.
Only after restarting character generation different options again should become possible.