title: Custom vector tiles does not match with tiles made from geojson source in mapbox
body: <p>I am trying to switch my current map-based application from geojson type source to vector tile source.
  As a proof of concept, I did a small experiment to visually compare the features drawn from geojson source vs vector source. Features drawn from vector source are geometrically different than that of geojson.</p>
  
  <p>Especially polygon geometries have a skew effect like shown below where features with black boundary are drawn from geojson source and blue one are from vector tile source</p>
  
  <p><a href="https://i.stack.imgur.com/1LTxr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1LTxr.png" alt="enter image description here"></a></p>
  
  <p>I need an exact precised tile-set at this point to succeed with my poc. I am using following tippecanoe command to create these tiles :</p>
  
  <pre><code>tippecanoe --minimum-zoom=5 -s EPSG:3857 --full-detail=20 --low-detail=18 --detect-longitude-wraparound --no-tiny-polygon-reduction --no-tile-size-limit --no-line-simplification --no-tile-compression --output-to-directory 'MT C Parcels' -l 'MT Parcels' /home/ubuntu/data/FWv2-data/data/geojson/1.geojson
  </code></pre>
  
  <p>Guessing it is a projection related issue, I tried couple of different projections with no success. How do I configure this command so that I can get exact tiles to be drawn as if it were from geojson ?</p>