Icon selection is not working in fontsawesome mode autoReplaceSvg=nest

[startmat]

When using autoReplaceSvg=nest

e.g. <script src="{% static 'appearance/node_modules/@fortawesome/fontawesome-free/js/all.min.js' %}" data-auto-replace-svg="nest" type="text/javascript"></script>

the font awsome tag:

<i class="fas fa-ad fa-fw d-fa-preview" style="font-weight: 900;"></i>

is replaced with:

<i class="" style="font-weight: 400;" data-fa-i2svg="">
<svg class="svg-inline--fa fa-acquisitions-incorporated fa-w-12 fa-fw d-fa-preview" aria-hidden="true" focusable="false" data-prefix="fab" data-icon="acquisitions-incorporated" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512" data-fa-i2svg=""><path fill="currentColor" d="M357.45 468.2c-1.2-7.7-1.3-7.6-9.6-7.6-99.8.2-111.8-2.4-112.7-2.6-12.3-1.7-20.6-10.5-21-23.1-.1-1.6-.2-71.6-1-129.1-.1-4.7 1.6-6.4 5.9-7.5 12.5-3 24.9-6.1 37.3-9.7 4.3-1.3 6.8-.2 8.4 3.5 4.5 10.3 8.8 20.6 13.2 30.9 1.6 3.7.1 4.4-3.4 4.4-10-.2-20-.1-30.4-.1v27h116c-1.4-9.5-2.7-18.1-4-27.5-7 0-13.8.4-20.4-.1-22.6-1.6-18.3-4.4-84-158.6-8.8-20.1-27.9-62.1-36.5-89.2-4.4-14 5.5-25.4 18.9-26.6 18.6-1.7 37.5-1.6 56.2-2 20.6-.4 41.2-.4 61.8-.5 3.1 0 4-1.4 4.3-4.3 1.2-9.8 2.7-19.5 4-29.2.8-5.3 1.6-10.7 2.4-16.1L23.75 0c-3.6 0-5.3 1.1-4.6 5.3 2.2 13.2-.8.8 6.4 45.3 63.4 0 71.8.9 101.8.5 12.3-.2 37 3.5 37.7 22.1.4 11.4-1.1 11.3-32.6 87.4-53.8 129.8-50.7 120.3-67.3 161-1.7 4.1-3.6 5.2-7.6 5.2-8.5-.2-17-.3-25.4.1-1.9.1-5.2 1.8-5.5 3.2-1.5 8.1-2.2 16.3-3.2 24.9h114.3v-27.6c-6.9 0-33.5.4-35.3-2.9 5.3-12.3 10.4-24.4 15.7-36.7 16.3 4 31.9 7.8 47.6 11.7 3.4.9 4.6 3 4.6 6.8-.1 42.9.1 85.9.2 128.8 0 10.2-5.5 19.1-14.9 23.1-6.5 2.7-3.3 3.4-121.4 2.4-5.3 0-7.1 2-7.6 6.8-1.5 12.9-2.9 25.9-5 38.8-.8 5 1.3 5.7 5.3 5.7 183.2.6-30.7 0 337.1 0-2.5-15-4.4-29.4-6.6-43.7zm-174.9-205.7c-13.3-4.2-26.6-8.2-39.9-12.5a44.53 44.53 0 0 1-5.8-2.9c17.2-44.3 34.2-88.1 51.3-132.1 7.5 2.4 7.9-.8 9.4 0 9.3 22.5 18.1 60.1 27 82.8 6.6 16.7 13 33.5 19.7 50.9a35.78 35.78 0 0 1-3.9 2.1c-13.1 3.9-26.4 7.5-39.4 11.7a27.66 27.66 0 0 1-18.4 0z"></path></svg>
</i>

then class Input

  get preview() {
    return this.container.element.querySelector(".d-fa-preview");
  }

Is fetching the svg tag and not the i tag, which causes an:

Uncaught DOMException: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node.