Incorrect balance change amount shown for feePayer transaction

[aaronTufts]

Describe the bug
When asking a user to sign a feePayer transaction:

1. The estimated balance changes for the user are incorrect.
2. Relatedly, the user is not told that this is a feePayer transaction and someone else will be paying the gas.
3. Maybe not related, but it's not clear where the total estimated balance changes is coming from - even if the wallet thought the sender was paying the gas, the amount seems off.

To Reproduce
Steps to reproduce the behavior:
I'm using @aptos-labs/wallet-adapter-react with the @pontem/wallet-adapter-plugin when making a React app.

1. Submit a feePayer transaction for signature where the sender is transferring 0.00001 APT to another address.

    const simpleTx = await aptosClient.transaction.build.simple({
      sender: senderAddress,
      withFeePayer: true,
      data: {
          function: "0x1::aptos_account::transfer",
          functionArguments: ["0x630af550649eeb3a027363c9ea46ec81e8a43b9a3ff5dfb34c60ef8a1199e934", 1000],
      },
  });

    const senderSig = await signTransaction(simpleTx); // ask for signature from Pontem wallet user

Expected behavior

1. The correct amount the sender is going to lose is shown.
2. Ideally, the sender would also see some indication that they are not the one paying the gas fee.

Screenshots

A non feePayer transaction looks the same (again, with total balance change number looking off to me):

Desktop (please complete the following information):

• OS: Mac OS 14.6.1
• Browser: Chrome v127.0.6533.100
• Pontem Crypto Wallet v2.6.13

[aaronTufts]

Anything planned for addressing this?

Let me know if I can provide more information.

[aaronTufts]

Petra now simulates a feePayer transaction now that AIP-92 was deployed to Mainnet: