Bukkit/CraftBukkit — comment on commit ab9a577824eb0a4c38df65f6819f037b11c447ae
File:  line 0
By sl1nk3:

you reverted didn't revert line 131 of BlockTrapdoor.java, now the check
"if (oldPower == 0 ^ power == 0 || (Block.byId[l] != null && Block.byId[l].isPowerSource()))" is always true.