When mining blocks in survival, the player cannot reach as far as before, but only when facing certain directions. Alternatively, the creative mode reach (though I recognize this part may not be a bug) has been greatly extended. This happens on 0.11.1 and is of mild annoyance. This occurs on iPhone 4S as well as the iPhone 6 as far as I know, and is easily reproduced by entering a world and breaking blocks in different directions. This is especially prominent in multiplayer worlds, and I am unsure if it is produced when playing solo.

NOTE: The only reason I have not included a screenshot is because I do not see a point in posting one, as there is no way to show proof of this bug within a screenshot.

Update: this bug is reproducible in singleplayer worlds as well, though it seems less prominent.