From the Green Book

[Flowergreg]

3.5.7.5 The dealer is the first to throw the dice; the resulting
number is used to determine who will roll the dice the second time.
Count the number from the dealer counterclockwise (the sum of 5 or 9
means the dealer will throw the dice again; 2, 6, or 10 means the
player to the dealer's left, South, will roll; 3, 7, or 11 means the
player opposite to the dealer, West, will roll; 4, 8, or 12 means the
player to the dealer's right, North, will roll). The number resulting
from the second throw of the dice will be added to the number
resulting from the first throw to determine where the wall will be
broken. Counting from the right-hand end of the dealer's wall, the
wall is broken after the stack indicated by the two rolls of the
dice.

Doesn't it say you always have to count from the dealer's wall?!
If so, MahjongTime draw is different, isn't it?

[Mark Chizhenok]

This is a known mistake of the Green Book. At least in Europe they
recognize it as a mistake and play differently - by breaking the wall
which the first dice throw indicated.