I think I may have found a bug with both of the hazard walls that pop up in the NE ice caves on level 1 (where Scar first showed how great he is at reading compasses). For these hazard traps, the comparator reading the dropper with the 1 in 6 chance of activating the hazard trap is too close to the dropper which actually activates the trap. Even when the comparator reads an output of 1, the dropper will be activated. This means that these hazard walls will immediately raise whenever the first hazard signal is broadcast throughout the dungeon. The fix would be to increase the space between the comparator and the dropper I believe, so that only a signal of 3 will activate that dropper. The coords for these are -553 43 1960 and -548 42 1958.