Chunks won't load after /tp

I have a world with 4 Teleporterspots. 3 Locations with 1 Commandblock, and 1 Hublocation with 3 Commandblocks. Commandblocks using "tp @a[r=3] X Y Z"

So this makes 4 Location:
Hub (62;34;263),
Mapspawn (65;63;260),
Farmland (225;65;234),
Underwater facility (1969;33;1996)

Each but one teleport function properly. Every time I use the commandblock at the farmland it teleports me to the hub, but half of the chunks won't load (look Screenshot). I have to relog to get the chunks loaded, so I can continue play the map.

English is not my first language, but I hope you can understand my problem.