I found that when I inserted a slider, my dropdowns failed to expand. Below is reproducible HTML:
<link rel="stylesheet" href="d3.slider.css" />
<div class="testSlider"></div>
<hr>
<select>test
<option value="a">a</option>
<option value="b">b</option>
<option value="c">c</option>
</select>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="d3.slider.js"></script>
<script>
var slider = d3.select(".testSlider")
.call(d3.slider()
.axis(true)
.value([0, 100])
.on("slide", function(evt, value) {
console.log(value[0]);
}));
</script>
I found that when I inserted a slider, my dropdowns failed to expand. Below is reproducible HTML: