In recent versions (Minecraft: Pocket Edition) the Auto-Jump feature is not working properly. Previously it only initiated an auto-Jump when next to a block that was 1 higher than the adjacent block below. Now, when coming into contact with any height side of a block the auto jump with begin. This makes it very difficult to go down strip mineshaft and doorways as Steve makes unnecessary jumps.

Older versions worked perfectly and never had an issue.