Adobis's Mission I - Unknown Dead Mine seems to have sprouted a damage bug with the newest setup. (It was fine when I just downloaded Kenny's most recent wz edits, but not since I downloaded the entire new setup.) The falling rocks and fires in the Unknown Dead Mine don't cause any damage to my character. They appear to cause damage - the damage figure shows up in purple as usual and my character pulls the f1 face - but my hp/mp does not go down at all (I have Magic Guard on). ETA - The monsters that are summoned by some of the chests, however, do damage normally.
It has been like that since before the last client patch too. Same thing with the lava in ZJQ (and possible the Caves of Trial 1-3, don't remember). I think it's intended to be this way but I'm not sure.
It's always been like that for me since right after the wipe. Also the lava doesn't do damage so I though it was intended that way.