Tx serialization in offline mode raise error

[golnarmordadi]

Summary

I created transaction with @emurgo/cardano-serialization-lib-nodejs
Singed tx with this library
Send signed tx to the my local node (cardano-rossetta)

BUT

With that (signed tx which transfred to the node ) , can not create offline txId before sending transaction.

So, why signed-tx-hex (txHex) can transfer to the node but can not deseriaize and create txId?

If my code for creating txId is not correct , please guid me to create txId offline before sending tx to the network.

Steps to reproduce the bug

txHex == signed transaction hash

1- Send well formatted transaction with:
const hashResponse = await constructionSubmit(txHex);
return hashResponse.transaction_identifier.hash;
2- Try to create offline txId from txHex (which is input of constructionSubmit function) with below code:

      const txHas =  'signed-tx-hash';
      const signedTransactionBytes = Buffer.from(txHas, 'hex');
      const parsed = TransactionHash.from_bytes(signedTransactionBytes);  ----> This line created above error, instead of deserialization of signed-tx-hash
     const hashBuffer = parsed && parsed.body() && Buffer.from(hash_transaction(parsed.body()).to_bytes());

Actual Result

Getting Error:
Deserialization failed in TransactionHash because: Invalid cbor: expected tuple 'hash length' of length 32 but got length Len(485).

From The Code :

      const txHas =  'signed-tx-hash';
      const signedTransactionBytes = Buffer.from(txHas, 'hex');
      const parsed = TransactionHash.from_bytes(signedTransactionBytes);  ----> This line created above error, instead of deserialization of signed-tx-hash
     const hashBuffer = parsed && parsed.body() && Buffer.from(hash_transaction(parsed.body()).to_bytes());

Expected Result

I expect that, create offline txId. Actually I need to create txId offline.

Environment

Mainnet - local node using cardano-rosetta

Platform

• Linux (Ubuntu)
• Linux (Other)
• macOS
• Windows

Platform version

Ubuntu 18.04.6

Runtime

• Node.js
• Docker

Runtime version

v12.18.3