Pooling email messages issue repro

pool.js

const { ImapFlow } = require('imapflow');

// Suppressing unnecessary output
const dummyLogger = {
  debug() {},
  info() {},
  warn() {},
  error() {}
};

const client = new ImapFlow({
    host: 'mail.example.com',
    port: 993,
    secure: true,
    auth: {
        user: 'test@example.com',
        pass: 'example'
    },
    logger: dummyLogger
});

const sleep = (msecs) => new Promise((r) => setTimeout(r, msecs));

const main = async () => {
    // Wait until client connects and authorizes
    await client.connect();

    // Select and lock a mailbox. Throws if mailbox does not exist
    let lock = await client.getMailboxLock('INBOX');
    try {
        // fetch latest message source

        while(true) {
          let message = await client.fetchOne('*', { source: true });
          console.log('messge:', message.uid);
          await sleep(1000);
        }

    } finally {
        // Make sure lock is released, otherwise next `getMailboxLock()` never returns
        lock.release();
    }

    // log out and close connection
    await client.logout();
};

main().catch(err => console.error(err));