deposit function of WstEth not working correctly

[code423n4]

Lines of code

https://github.com/code-423n4/2023-03-asymmetry/blob/a8dd9399565ac608860dcadd7b16ff04aee06cb7/contracts/SafEth/derivatives/WstEth.sol#L73-L81

Vulnerability details

Impact

The deposit function doesnt seem to work at all, or correctly at all. Its missing some code, etc.
Please see my natspec notes below for more clarity:

Apologies, this is 10mins before contest ends, so I'm just going to copy my NatSpec notes here:

function deposit() external payable onlyOwner returns (uint256) {
    uint256 wstEthBalancePre = IWStETH(WST_ETH).balanceOf(address(this)); /// @audit checks the token balance in this contract
    // solhint-disable-next-line
    (bool sent, ) = WST_ETH.call{value: msg.value}(""); /// @audit sends ETH to the address represented by this state constant: WST_ETH
    require(sent, "Failed to send Ether"); /// @audit LOW RISK: missing code which converts the sent ETH into wstETH probably via IWStETH interface, and then sends it to this contract
    uint256 wstEthBalancePost = IWStETH(WST_ETH).balanceOf(address(this)); /// @audit LOW RISK: checks the token balance in this contract, expecting a change, but no ERC20 token was deposited into this contract yet...
    uint256 wstEthAmount = wstEthBalancePost - wstEthBalancePre; /// @audit this will always be 0 until above is fixed
    return (wstEthAmount);
}

Proof of Concept

Tools Used

Manual only.

Recommended Mitigation Steps

Complete the code as per my @Audit notes.

[c4-pre-sort]

0xSorryNotSorry marked the issue as low quality report

[c4-sponsor]

toshiSat marked the issue as sponsor disputed

[c4-judge]

Picodes marked the issue as unsatisfactory:
Invalid