Map name: Herobrine's Mansion
Where were you when it happened: for one of the bugs, skeleton king's room (1st boss)
How many players were in the map?: varying between 2 and 3
What happened?: 1. This map is not intended to have pvp enabled. However, this map was released the update before the /scoreboard commands were implemented. The problem is that pvp is enabled in a co-op adventure map not intended to have pvp.
2. Sometimes, bosses will not drop their music disk when defeated. On the flip side, there is a random chance of 1 or more extra copies of the same boss spawning in a game (not including the resurrected, amped-up sub-boss-class mobs that spawn to assist the 5th boss...).
3. In the unlit library area on the second floor, there is supposed to be a cauldron filled with water next to a brewing stand. Don't worry, it's there, but, it's intended purpose no longer functions. apparently, back in MC 1.4, cauldrons would cause a block-update when their water level changed. this is not so now, so the secret loot in the library described is now inaccessible.