Line height does not respect text format

by Tristen Brown

HTML

<link rel="stylesheet" href="https://api.tiles.mapbox.com/mapbox-gl-js/v1.1.0/mapbox-gl.css">
<script src="https://api.tiles.mapbox.com/mapbox-gl-js/v1.1.0/mapbox-gl.js"></script>
<div id="map">
</div>

CSS

body {
    margin: 0;
    padding: 0;
  }

  #map {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
  }

JavaScript

mapboxgl.accessToken = 'pk.eyJ1IjoidHJpc3RlbiIsImEiOiJjajZoOXU4Z2kwNnppMnlxd2d6bTFvZ2xtIn0.PP7AoUakMfeqdXFHdsY0oA';

const style = {
  version: 8,
  center: [139.772, 35.681],
  zoom: 17,
  sources: {
    composite: {
      url: 'mapbox://mapbox.mapbox-streets-v8',
      type: 'vector'
    }
  },
  sprite: 'mapbox://sprites/tristen/cjwurvssn93s01cny9t91anji/a3zx8crhca28a1j1ljgwyyo1z',
  glyphs: 'mapbox://fonts/tristen/{fontstack}/{range}.pbf',
  layers: [{
    id: 'foo',
    type: 'symbol',
    source: 'composite',
    'source-layer': 'housenum_label',
    layout: {
      'text-field': [
      	'format',
        'Hello', {},
        '\n', {},
        'world', {}
      ],
      'text-size': 12.5,
    }
  }, {
    id: 'bar',
    type: 'symbol',
    source: 'composite',
    'source-layer': 'place_label',
    layout: {
      'text-field': [
      	'format',
        'Hello', {},
        '\n', {},
        'world', {}
      ],
      'text-size': 12.5,
      'text-line-height': 0.1
    },
    paint: {
      'text-color': 'red'
    }
  }]
};

new mapboxgl.Map({
  container: 'map',
  style
});