$tag ignored if group passed to the_element()

[cathal-maverick]

$icenberg->the_element('some_group', 'h1');

Expected Output

<h1 class="block--block-name__some-group">
    <div class="block--block-name__field-1">Value 1</div>
    <div class="block--block-name__field-2">Value 2</div>
</h1>

Actual Output

<div class="block--block-name__some-group">
    <div class="block--block-name__field-1">Value 1</div>
    <div class="block--block-name__field-2">Value 2</div>
</div>