Subscribe.on fires past events

Ethers Version

5.6.5

Search Terms

subscribe new events filter

Describe the Problem

Hi,

when I am subscribing to a contract’s events I am also seeing past events even the filter fromBlock: 'latest' is set.

Am I doing something incorrectly?

   import { useProvider } from "wagmi";

    const provider = useProvider();

    const contract = await new ethers.Contract(
    address,
    abi,
    provider
  );

    const listener: Listener = (id: BigNumber, user: string) =>
    console.dir("id", id.toString(), "user", user)

    contract.on(
    // "CancelOrderEvent",
    {
      topics: [utils.id("CancelOrderEvent(uint256,address)")],
      fromBlock: "latest",
    },
    listener
  )

I should mention, I am using wagmi however, I don’t think that changes the way ethers works as I just work with the ethers.Contract.

Help appreciated, cheers 🙏🏼

Code Snippet

No response

Contract ABI

No response

Errors

No response

Environment

Ethereum (mainnet/ropsten/rinkeby/goerli), node.js (v12 or newer), Hardhat, Ganache

Environment (Other)

No response

[ricmoo]

Thanks! I have found the bug.

Yes, this was introduced with the fix for networks which have non-consistent event indexing (e.g. Polygon and BSC).

This fix will go out in v5.7.0.

[kvanstee]

I’m getting previous events fired with contract.on using ganache testnet. Can I assume this is an artifact of ganache?