Per world view distance causes chunks to glitch

When spawning or teleporting to world loaded by plugins (my creative and games map)

The world has 15 of view distance.

Loaded with this code :

WorldCreator creator = WorldCreator.name("world_games");
creator.type(WorldType.FLAT);
creator.generateStructures(false);
world = Bukkit.createWorld(creator);

world.setGameRule(GameRule.DO_DAYLIGHT_CYCLE, false);
world.setGameRule(GameRule.DO_FIRE_TICK, false);
world.setGameRule(GameRule.DO_WEATHER_CYCLE, false);
world.setGameRule(GameRule.MOB_GRIEFING, false);

world.setGameRule(GameRule.RANDOM_TICK_SPEED, 0);
world.setTime(6000);

The map load the first 9 chunk normally, and the chunk at 10 chunk from my spawn point is loaded only where i was close to it (1 chunk).

All other chunk never load, i can only load the 20chunk² around my spawn point.

If i quit and join, do the same and my new spawn point is the center of this new loaded area.

I tried before and after the commit called "Fix loading secondary worlds", no change.

I have only one plugins, mine, managing many part of the server, but doesn't affect the chunk loading for this map (custom generator for creative map, but same problem).