Trying to sign with a funded account reverts with 0 lamports

[julian-zamt-cf]

Trying to sign a tx like this to an Anchor ix that creates a Token account with init:

console.log(`globalAdmin balance: ${await banksClient.getBalance(globalAdmin.publicKey)}`);
// Prints "globalAdmin balance: 100000000000"

await program.methods
        .initializeProgram(feeAddress.publicKey)
        .accounts({
            globalState: getGlobalStateAddress(program),
            globalAdmin: globalAdmin.publicKey,
        })
        .signers([globalAdmin])
        .rpc();

I'm getting:
"...Transfer: insufficient lamports 0, need 4823280...",

The account is being funded like this, where funder is provider.wallet.payer and receiver the globalAdmin account:

const ixs = [
        anchor.web3.SystemProgram.transfer({
            fromPubkey: funder.publicKey,
            toPubkey: receiver,
            lamports: BigInt(amount.toString()),
        }),
    ];

    const tx = new anchor.web3.Transaction();
    [tx.recentBlockhash] = await banksClient.getLatestBlockhash();
    tx.add(...ixs);
    tx.sign(funder);
    await banksClient.processTransaction(tx);

    let balance;
    let hash;

    [balance, hash] = await Promise.all([banksClient.getBalance(receiver), banksClient.getLatestBlockhash()]);

    // Ensure the balance is confirmed
    while (balance === BigInt(0)) {
        [balance, hash] = await Promise.all([banksClient.getBalance(receiver), banksClient.getLatestBlockhash()]);

        await sleep(10);
    }

Notice that I even await a little to ensure that the next block was reached (Sometimes I had a 0 lamports log when fetching the account balance if not).

However, in this other toy repo I made to inspect the bug I did not have the error 🤔

[Armen-Arakelian]

I had the same, the fix was to set up a proper operations order - initialize payer and the program after setting bankrun provider in anchor. So the order is next
provider = new BankrunProvider(context); anchor.setProvider(provider); payer = provider.wallet; program = anchor.workspace.yourProgram as Program<YourProgram>;

I assume this arises from that payer is taken from basic anchor testing environment before the bankrun one is set.
mb it will help