Is imposible open some chest with a map in a ship

When I try to open a chest (the map chest) in a ship this is opened but is empty, if I close the chest and try to open this again I can't open this and the fps go down to 0.The same hapend if I try tp break the chest, nothing fall of this and the fps go down to 0.
If I open other chest of the ship all is ok, I get the items and the fps are stable.
This not happen all time and sometimes I can open the chest after I restart the game.

Pd: Sorry for the bad inglish.