The book indicates that the Volcanic Accumulator "will [...] convert [...] to lava in a 3x3 given that these blocks exist beneath it in its 3x3 area." ( i.e. a 3x3 area centered on itself, one block down), but it instead creates lava in a 5x5 area centered on itself, one block down. Is the book correct, or is the entity correct?

3x3 was intended, fixed in next update. Thank you.