We have just finished rendering the map for our alpha 14.5 world to uncover more locations on the map and to prevent lag since it saves a copy of a more complete map on the server for faster load times. This took over an hour and a half to finish and because of this we will do our best to only do this one or two times only since it creates too much down time. Sorry for any inconvenience that this may have caused.
If you prefer to have the map rendered or not let us know by taking our poll.