maybe you could change it so gravestones dont show up in "boss fights" and just make it known where those areas are; might make me think a lil more before killing the troll with tnt. btw i thought you did the same thing with the sewer creeper spawner but i just went and died there and got a gravestone.Not a bug, per se, it is the result of new protections near the witch spawners, the graves are not being placed which is the cause. Guess I may have to rethink that area yet again.