If you look at Pyongyang at the Taedong River, it is gone on some places, however the tags seem fine (natural=water) also I did a refresh of the tiles. http://www.openstreetmap.org/?lat=39.0241&lon=125.7533&zoom=13&layers=M
Can someone have a look at this party disappearing river? And let me know the solution, since also on other places i notices this behavior.
Thanks for helping!