block reach is bugged in 0.11.1

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.