The inner loop of "Derivation process for the minimum coding block address of a coding block" is:

for (i = 0, p = 0; i < Log2CtbSize - Log2MinCbSize; i++) {
    m = 1 << i
    p += (m & x ? m*m : 0) + (m & y ? 2*m*m : 0)
    MinCbAddrZS[x][y] += p
}

But to get a proper zscan order(e.g. (0, 0) => 0, (0, 1) => 2, (1, 0) => 1, (1, 1) => 3), either the "p +=" should be a "p =" or the "MinCbAddrZS[x][y] += p" should be after the loop.
(Additionally, since Log2CtbSize - Log2MinCbSize == log2_diff_max_min_coding_block_size, I don't see why the later isn't used).