If you think about it, there is no easy way to mix testnet bitcoins. You may be wondering why would one want privacy in testnet, but I'm sure there is a reason or two. For example, you might not want to reveal you own a faucet. That is a feedback for the project too.
That being said, I
also experienced address reuse, which I suppose is a realized decision by the OP. BTW, that allows me to steal every deposit.
Thank you for your reply, I don’t think you can take away the deposit other than the Bitcoin address you have a private key.
I've done multiple tests locally myself, so there are multiple transaction logs for these bitcoin addresses, and these logs are from my previous tests locally, and I'll admit that I've been lazy, but there's no reuse of addresses in this program, and once you've successfully deposit and gotten your private key, I don't continue to test with that address, and I'd like to discuss it if there are any other ways for you to take away other bitcoins.