Currency selector rendering different on Apple devices

[damatech]

Hi there, I'm including a currency selector into my theme via the code:

{% form 'currency' %}
  <div class="currency-selector" >
    {{ form | currency_selector }}
  </div>
{% endform %} 

And for some reason, after styling, the currency selector looks like this on Apple devices:

Whereas in every other browser/android device it's shown as:

Any insight in this would be appreciated, thanks heaps.