Player.sendMap does render the map, but the arguments given to the packet contain 0 for the updated Column count, which causes the client to ignore the changes.

The problem with this is that sometimes, when the player looks at a map in an item frame, the regular updates happen only 2 times per second. sendMap should force the map to update on the client to archieve higher rates, but this bug forbids this.

There is an easy workaround, but a fix would also be nice.