title: System.Text.JSON doesn't deserialize what Newtonsoft does
body: <p>I have a json that the new <code>System.Text.Json.JsonSerializer.Deserialize&lt;T&gt;(json_data)</code> serialize as <code>List&lt;T&gt;</code> with the correct numbers of elements, but then the objects inside have all the values null or 0</p>
  
  <p>Same json with <code>Newtonsoft.Json.JsonConvert.DeserializeObject&lt;T&gt;(json_data)</code> is correctly filled.</p>
  
  <p>Class:</p>
  
  <pre><code>public class SensorValue
      {
          public string StationCode { get; set; }
          public string SensorCode { get; set; }
          public string SensorNameIt { get; set; }
          public string SensorNameDe { get; set; }
          public string SensorNameLd { get; set; }
          public string SensorUnitMeasure { get; set; }
          public DateTime SamplingDateTime { get; set; }
          public Decimal SamplingValue { get; set; }
      }
  </code></pre>
  
  <p>JSON</p>
  
  <pre><code>[{"stationCode":"89190MS","sensorCode":"LT","sensorNameIt":"Temperatura dell´aria","sensorNameDe":"Lufttemperatur","sensorNameLd":"Temperatura dl’aria","sensorUnitMeasure":"°C","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.3},{"stationCode":"89190MS","sensorCode":"N","sensorNameIt":"Precipitazioni","sensorNameDe":"Niederschlag","sensorNameLd":"plueia","sensorUnitMeasure":"mm","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.4},{"stationCode":"89190MS","sensorCode":"WR","sensorNameIt":"Direzione del vento","sensorNameDe":"Windrichtung","sensorNameLd":"Direzion dl vënt","sensorUnitMeasure":"° ","samplingDateTime":"2019-11-15T15:10:00","samplingValue":165.7},{"stationCode":"89190MS","sensorCode":"WG","sensorNameIt":"Velocità del vento","sensorNameDe":"Windgeschwindigkeit","sensorNameLd":"Slune dl vënt","sensorUnitMeasure":"m/s","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.7},{"stationCode":"89190MS","sensorCode":"WG.BOE","sensorNameIt":"Velocitá raffica","sensorNameDe":"Windgeschwindigkeit Böe","sensorNameLd":"Slune dl vënt","sensorUnitMeasure":"m/s","samplingDateTime":"2019-11-15T15:10:00","samplingValue":1.3},{"stationCode":"89190MS","sensorCode":"LF","sensorNameIt":"Umidità relativa","sensorNameDe":"relative Luftfeuchte","sensorNameLd":"Tume relatif","sensorUnitMeasure":"%","samplingDateTime":"2019-11-15T15:10:00","samplingValue":100.0},{"stationCode":"89190MS","sensorCode":"LD.RED","sensorNameIt":"Pressione atmosferica","sensorNameDe":"Luftdruck","sensorNameLd":"Druch dl’aria","sensorUnitMeasure":"hPa","samplingDateTime":"2019-11-15T15:10:00","samplingValue":1006.9},{"stationCode":"89190MS","sensorCode":"GS","sensorNameIt":"Radiazione globale ","sensorNameDe":"Globalstrahlung","sensorNameLd":"Nraiazion globala ","sensorUnitMeasure":"W/m²","samplingDateTime":"2019-11-15T15:10:00","samplingValue":3.8},{"stationCode":"89190MS","sensorCode":"SD","sensorNameIt":"Durata soleggiamento","sensorNameDe":"Sonnenscheindauer","sensorNameLd":"Dureda dl surëdl","sensorUnitMeasure":"s","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.0}]
  </code></pre>
  
  <p>Any help ?
  consoleapp project .net core 3.0.0
  newtonsoft 12.0.3</p>
  
  <p><a href="https://i.stack.imgur.com/k7whu.png" rel="noreferrer"><img src="https://i.stack.imgur.com/k7whu.png" alt="enter image description here"></a></p>