symbol-sdk-typescript-javascript: Wrong cosigner when converting account to multisig account

I am following this https://nemtech.github.io/guides/account/converting-an-account-to-multisig.html to convert an account to a multisig account.

The transaction is announce successfully, but the wired part is at the Cosign the AggregateTransaction .

I am expecting Alice and Bob to consign the aggregate transaction, but non of them receive the aggregateBondedTransactions.

When I try to use the multisig account to consign it, and it did go through successfully. I am confuse.

This is how I cosign the aggregate transaction, and using multisig account went through:

accountHttp
    .aggregateBondedTransactions(multisigAccount.publicAccount, new QueryParams(100))
    .pipe(
        mergeMap((_) => _),
        filter((_) => _.transactionInfo !== undefined && _.transactionInfo.hash !== undefined &&
            _.transactionInfo.hash === hash), // Filter transaction
        toArray(),
    )
    .subscribe((transactions: AggregateTransaction[]) => {
        console.log(transactions.length)
        if (transactions.length) {
            const transaction = transactions[0];
            const cosignatureTransaction = CosignatureTransaction.create(transaction);
            const signedCosignature = multisigAccount.signCosignatureTransaction(cosignatureTransaction);

            transactionHttp.announceAggregateBondedCosignature(signedCosignature).subscribe(
                () => {
                    console.log('Transaction cosigned and announced correctly');
                }, (err) => {
                    console.log(err.response !== undefined ? err.response.text : err);
                });

        }
    });

I am using below: “nem2-sdk”: “^0.13.1” “catapult-server”:“v0.5.0.1”

---

Related issue:

After signed by multisig account, I try to getMultisigAccountInfo:

accountHttp
.getMultisigAccountInfo(address)
.subscribe(accountInfo => console.log(accountInfo), err => console.error(err));

I get an error and undefined result:

body: MultisigAccountInfoDTO { multisig: undefined } }