By leaving the type, crush, newspecial, and texture fields of this structure uninitialized, this error causes the T_MoveFloor function to later read effectively random values out of these fields. If the value of the type field just happens to be lowerAndChange, the random special and flat texture will be propagated to the sector. Since there is only one possible value out of 65536 that will result in this behavior, this problem is of extreme rarity, and may not be witnessed even once during literal years of gameplay.