• This issue is not solved in a development build

Describe the bug
Using the latest version of Spigot/Paper/PurPur 1.20.2 and the latest development build #669, the packet container returns an empty list of world names.

To Reproduce

PacketContainer packet = ...
StructureModifier<World> worldsStructureModifier = packet.getWorldKeys();
List<World> worlds = worldsStructureModifier.getValues();

log(Packet-worlds: %s",
      worlds
        .stream()
        .map(World::getName)
        .collect(Collectors.joining(", ")));

Current log
1.20.1: Packet-worlds: world
1.20.2: Packet-worlds:

Expected log
1.20.1: Packet-worlds: world
1.20.2: Packet-worlds: world

Version Info

• Spigot 1.20.2
• The latest development build #669 with default configurations.

Thanks! 🥇