Found my first map in a while, dug up the chest and the server crashed just about the same time. (If it was me, sorry! Totally not intentional). :)
If it was dug up, does a treasure chest behave like an item that will gradually disappear after discovery or does it have permanence in-game?
That is an excellent question.... I don't know. Next time I dig one up i'll check it out and see. the decay timer is relatively low. I dont think it was you who crashed the server by the way ;)