io.in(`${roomId}`).fetchSockets() sometimes cannot get socket from other server

I am using fetchSockets() in a multi-node setup with a PostgreSQL adapter and I encounter inconsistencies where socket IDs from other node are sometimes not included in the results.

This is my code:
```
    await socket.join(room);
    const socketInstances = await io.in('abc').fetchSockets();
    // socketInstances is not consistence
```

