When using the `rescanblockchain` wallet RPC command, it seems like sometimes (though not always, and I couldn't find a specific pattern for when this does and doesn't happen) the `time` field of all transactions found is being set to the time of the most recent transaction detected. Besides that field, all data (including block and blocktime) return correctly. What's more, even in a node with `txindex=1` this happens, despite that when calling the (non-wallet-specific) `getrawtransaction` command, it returns the correct time.

Here's an example of a testnet transaction where I experienced this behaviour, and the output of Core where the same `txid` has. 2 different `time`s - a correct one using `getrawtransaction` and an incorrect one using `gettransaction`:
```
bitcoin-cli --testnet -rpcwallet=wallet getrawtransaction 8bacfc9c63d181e9d303f57f550fe72870afd640c961466829c6212bb23a72fe 1
{
  "txid": "8bacfc9c63d181e9d303f57f550fe72870afd640c961466829c6212bb23a72fe",
  "hash": "3de22064b8fec52fb183a8ad46fd011e6c6cab9906a008afa3d649d11bd250f1",
  "version": 2,
  "size": 222,
  "vsize": 141,
  "weight": 561,
  "locktime": 0,
  "vin": [
    {
      "txid": "685571776adce2ac3332faf6ed125235366cc3cb464604c9234bf371f1ab4e02",
      "vout": 0,
      "scriptSig": {
        "asm": "",
        "hex": ""
      },
      "txinwitness": [
        "30440220516d0b313aae44f639a111dac8f27bc1fac446345aaad51852a784620ac62c690220433cb7fdeb78cd84574ec0ddd08789a248fe19b71759e1b3b448ff9c3f980be401",
        "03eca8ceb44c4d930ab89fb5d721d02a745e4aeb0f75993fa535e98fb6c7f6e16e"
      ],
      "sequence": 4294967294
    }
  ],
  "vout": [
    {
      "value": 0.53891045,
      "n": 0,
      "scriptPubKey": {
        "asm": "0 f3020d45a9ccf870ddf4176fde4420931ffd9af6",
        "hex": "0014f3020d45a9ccf870ddf4176fde4420931ffd9af6",
        "reqSigs": 1,
        "type": "witness_v0_keyhash",
        "addresses": [
          "tb1q7vpq63dfenu8ph05zahau3pqjv0lmxhk73dsjm"
        ]
      }
    },
    {
      "value": 0.10000000,
      "n": 1,
      "scriptPubKey": {
        "asm": "0 bf702bf755da860153e7b1043fea160c6dcd9f1a",
        "hex": "0014bf702bf755da860153e7b1043fea160c6dcd9f1a",
        "reqSigs": 1,
        "type": "witness_v0_keyhash",
        "addresses": [
          "tb1qhaczha64m2rqz5l8kyzrl6skp3kum8c6m0c2h4"
        ]
      }
    }
  ],
  "hex": "02000000000101024eabf171f34b23c9044646cbc36c36355212edf6fa3233ace2dc6a777155680000000000feffffff02e54f360300000000160014f3020d45a9ccf870ddf4176fde4420931ffd9af68096980000000000160014bf702bf755da860153e7b1043fea160c6dcd9f1a024730440220516d0b313aae44f639a111dac8f27bc1fac446345aaad51852a784620ac62c690220433cb7fdeb78cd84574ec0ddd08789a248fe19b71759e1b3b448ff9c3f980be4012103eca8ceb44c4d930ab89fb5d721d02a745e4aeb0f75993fa535e98fb6c7f6e16e00000000",
  "blockhash": "00000000000000bc3b97cbe323c4695f39a65cc1d73060dca8ad084fb0ce61b5",
  "confirmations": 27528,
  "time": 1600623861,
  "blocktime": 1600623861
}
```
```
bitcoin-cli --testnet -rpcwallet=wallet gettransaction 8bacfc9c63d181e9d303f57f550fe72870afd640c961466829c6212bb23a72fe
{
  "amount": -0.10000000,
  "fee": -0.00000142,
  "confirmations": 27528,
  "blockhash": "00000000000000bc3b97cbe323c4695f39a65cc1d73060dca8ad084fb0ce61b5",
  "blockheight": 1835261,
  "blockindex": 24,
  "blocktime": 1600623861,
  "txid": "8bacfc9c63d181e9d303f57f550fe72870afd640c961466829c6212bb23a72fe",
  "walletconflicts": [
  ],
  "time": 1601486746,
  "timereceived": 1602570577,
  "bip125-replaceable": "no",
  "details": [
    {
      "involvesWatchonly": true,
      "address": "tb1q7vpq63dfenu8ph05zahau3pqjv0lmxhk73dsjm",
      "category": "send",
      "amount": -0.53891045,
      "label": "Change #5",
      "vout": 0,
      "fee": -0.00000142,
      "abandoned": false
    },
    {
      "involvesWatchonly": true,
      "address": "tb1qhaczha64m2rqz5l8kyzrl6skp3kum8c6m0c2h4",
      "category": "send",
      "amount": -0.10000000,
      "vout": 1,
      "fee": -0.00000142,
      "abandoned": false
    },
    {
      "involvesWatchonly": true,
      "address": "tb1q7vpq63dfenu8ph05zahau3pqjv0lmxhk73dsjm",
      "category": "receive",
      "amount": 0.53891045,
      "label": "Change #5",
      "vout": 0
    }
  ],
  "hex": "02000000000101024eabf171f34b23c9044646cbc36c36355212edf6fa3233ace2dc6a777155680000000000feffffff02e54f360300000000160014f3020d45a9ccf870ddf4176fde4420931ffd9af68096980000000000160014bf702bf755da860153e7b1043fea160c6dcd9f1a024730440220516d0b313aae44f639a111dac8f27bc1fac446345aaad51852a784620ac62c690220433cb7fdeb78cd84574ec0ddd08789a248fe19b71759e1b3b448ff9c3f980be4012103eca8ceb44c4d930ab89fb5d721d02a745e4aeb0f75993fa535e98fb6c7f6e16e00000000"
}
```
* them. Tries to sign if sign=true. Sets `complete` if the PSBT is now complete
     * (i.e. has all required signatures or signature-parts, and is ready to
     * finalize.) Sets `error` and returns false if something goes wrong.
     *
     * @param[in]  psbtx PartiallySignedTransaction to fill in
     * @param[out] complete indicates whether the PSBT is now complete
     * @param[in]  sighash_type the sighash type to use when signing (if PSBT does not specify)
     * @param[in]  sign whether to sign or not
     * @param[in]  bip32derivs whether to fill in bip32 derivation information if available
     * return error
     */
    TransactionError FillPSBT(PartiallySignedTransaction& psbtx,
                  bool& complete,
                  int sighash_type = 1 ,
                  bool sign = true,
                  bool bip32derivs = true,
                  size_t* n_signed = nullptr) const;
    /**
     * Submit the transaction to the node's mempool and then relay to peers.
     * Should be called after CreateTransaction unless you want to abort
     * broadcasting the transaction.
     *
     * @param[in] tx The transaction to be broadcast.
     * @param[in] mapValue key-values to be set on the transaction.
     * @param[in] orderForm BIP 70 / BIP 21 order form details to be set on the transaction.
     */
    void CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm);
    
    bool SubmitTxMemoryPoolAndRelay(const CWalletTx& wtx, std::string& err_string, bool relay) const;
    bool DummySignTx(CMutableTransaction &txNew, const std::set<CTxOut> &txouts, bool use_max_sig = false) const