EIP712: ecrecover returns different address - solidity

Question

I am trying to sign typed data via MetaMask "eth_signTypedData_v4". Recovering signer via recoverTypedSignature_v4 returns correct address that I signed my data with. But smart contract returns wrong address every time as ecrecover output. Can't understand what is wrong with the code.
js:
const provider = new ethers.providers.Web3Provider(window.ethereum);
const signer = provider.getSigner();// 签名
const signerAddress = (await signer.getAddress()).toLowerCase();
const originalMessage = {
types: {
EIP712Domain: [
{ name: "name", type: "string" },
{ name: "version", type: "string" },
{ name: "chainId", type: "uint256" },
{ name: "verifyingContract", type: "address" }
],
Greeting: [
{ name: 'contents', type: 'string' },
{ name: "sender", type: "address" },
{ name: "x", type: "uint256" }
],
},
primaryType: 'Greeting',
domain: {
name: 'SignatureVerifyTest',
version: '1',
chainId: 31337,
verifyingContract: "0x5fbdb2315678afecb367f032d93f642f64180aa3"
},
message: {
contents: 'Hello',
sender: signerAddress,
x: 123
}
};
const signedMessage = await signer.provider.send("eth_signTypedData_v4", [signerAddress, JSON.stringify(originalMessage)]);
const { v, r, s } = ethers.utils.splitSignature(signedMessage);
console.log('signerAddress:', signerAddress)
console.log("r:", r);
console.log("s:", s);
console.log("v:", v);
bytes32 eip712DomainHash = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes("SignatureVerifyTest")),
keccak256(bytes("1")),
block.chainid,
address(this)
)
);
bytes32 hashStruct = keccak256(
abi.encode(keccak256("Greeting(string contents,address sender,uint256 x)"), contents, sender, x)
);
bytes32 hash = ECDSA.toTypedDataHash(eip712DomainHash, hashStruct);
address signer = ECDSA.recover(hash, v, r, s);
console.log("sender", sender);
console.log("signer", signer);