data issue with symbol MA, the historical daily bar price did not reflect the split on correct date

symbol: MA
query Stock Splits v3, Stock splits return results that 1 to 10 split on execution date of 2014-01-07:
https://api.polygon.io/v3/reference/splits?ticker=MA&limit=10&apiKey=

{
"results": [
{
"execution_date": "2014-01-07",
"id": "E638b814f2f173345156fb6fb46044c73547ed879a376f59ee074dc5aea29e606",
"split_from": 1,
"split_to": 10,
"ticker": "MA"
}
],
"status": "OK",
"request_id": "a85636b46e54dc7404504e2d7b443295"
}

Then query un-adjusted daily bar for this stock, it shows price changed on 2014-01-22, instead of 2024-01-07 as specified in split query
https://api.polygon.io/v2/aggs/ticker/MA/range/1/day/2014-01-06/2014-01-31?adjusted=false&sort=asc&apiKey=

{
"ticker": "MA",
"queryCount": 19,
"resultsCount": 19,
"adjusted": false,
"results": [
{
"v": 702401,
"vw": 828.5214,
"o": 831.96,
"c": 826.69,
"h": 833.88,
"l": 824.6601,
"t": 1388984400000,
"n": 9750
},
{
"v": 764652,
"vw": 836.5694,
"o": 831.01,
"c": 837.09,
"h": 839.19,
"l": 831,
"t": 1389070800000,
"n": 10882
},
{
"v": 693846,
"vw": 838.8688,
"o": 837.32,
"c": 836.84,
"h": 844.01,
"l": 836.0135,
"t": 1389157200000,
"n": 11400
},
{
"v": 721264,
"vw": 841.311,
"o": 840,
"c": 843.6,
"h": 844.2399,
"l": 836.25,
"t": 1389243600000,
"n": 10431
},
{
"v": 821383,
"vw": 835.6546,
"o": 846.84,
"c": 834.76,
"h": 847.48,
"l": 831.6,
"t": 1389330000000,
"n": 11816
},
{
"v": 1236066,
"vw": 821.7265,
"o": 835.46,
"c": 810,
"h": 837.9999,
"l": 807.63,
"t": 1389589200000,
"n": 18007
},
{
"v": 1087015,
"vw": 818.3703,
"o": 812.82,
"c": 821.71,
"h": 822.97,
"l": 804.14,
"t": 1389675600000,
"n": 13687
},
{
"v": 775067,
"vw": 826.0903,
"o": 825.11,
"c": 823.37,
"h": 829.779,
"l": 821.24,
"t": 1389762000000,
"n": 10446
},
{
"v": 496571,
"vw": 825.6356,
"o": 824.82,
"c": 825.5,
"h": 827.99,
"l": 822.42,
"t": 1389848400000,
"n": 7956
},
{
"v": 1333039,
"vw": 821.536,
"o": 825,
"c": 818.42,
"h": 834.02,
"l": 807.88,
"t": 1389934800000,
"n": 17604
},
{
"v": 1010370,
"vw": 819.3832,
"o": 823.02,
"c": 818.48,
"h": 826.56,
"l": 814.03,
"t": 1390280400000,
"n": 12440
},
{
"v": 7220717,
"vw": 83.037,
"o": 82.21,
"c": 83.3,
"h": 83.9,
"l": 82,
"t": 1390366800000,
"n": 53484
},
{
"v": 6595809,
"vw": 82.6815,
"o": 83.8,
"c": 82.36,
"h": 83.81,
"l": 81.92,
"t": 1390453200000,
"n": 41298
},
{
"v": 9541279,
"vw": 79.9785,
"o": 81.78,
"c": 78.51,
"h": 81.98,
"l": 78.5,
"t": 1390539600000,
"n": 58303
},
{
"v": 13715538,
"vw": 76.4059,
"o": 78.95,
"c": 76.05,
"h": 78.98,
"l": 74.95,
"t": 1390798800000,
"n": 87358
},
{
"v": 7738933,
"vw": 78.4354,
"o": 76.7,
"c": 78.83,
"h": 79.09,
"l": 76.58,
"t": 1390885200000,
"n": 51656
},
{
"v": 7915682,
"vw": 77.944,
"o": 78.19,
"c": 77.7,
"h": 78.67,
"l": 77.01,
"t": 1390971600000,
"n": 45835
},
{
"v": 8749277,
"vw": 79.2893,
"o": 80.45,
"c": 79.76,
"h": 80.55,
"l": 78.24,
"t": 1391058000000,
"n": 55543
},
{
"v": 23255563,
"vw": 75.3643,
"o": 75.51,
"c": 75.68,
"h": 76.99,
"l": 71.75,
"t": 1391144400000,
"n": 128732
}
],
"status": "OK",
"request_id": "2139d6915b846eb69e05c7e20161ae12",
"count": 19
}

Start by comparing the Stock Splits v3 response for MA with the un-adjusted daily bars response for 2014-01-06 through 2014-01-31, focusing on the execution date and the price transition. Trace the corresponding client API entry points and tests, if present; done means the discrepancy is explained or corrected and covered by a regression test.