What is the balance showing as in your "bitcoin.com" wallet?
That address is most likely a "change" address that is controlled by your wallet... However, unfortunately, the bitcoin.com wallet (a truly terrible wallet, btw
) does not give you an easy way to "see" your change addresses.
One option would be to take the 12 word recovery phrase for your BTC wallet and import it into a wallet like Electrum (you need to use the "BIP39 seed" option in Electrum) and then check the addresses shown in Electrum. If you can see the "1JMW9B..." address listed as a "change" address, then you're fine... you can still access the coins.
Alternatively, you can just check the current balance in your bitcoin.com wallet... does it look like the full 0.008917 BTC amount was deducted from the balance BEFORE you sent the transaction? Or has your balance only reduced by 0.00185387 BTC?
Also, to learn more about "change", how and why it exists... you can refer here:
https://en.bitcoin.it/wiki/Changeand here:
https://en.bitcoin.it/wiki/Coin_analogy