So in the fieldset for Elements ordering here admin/config/search/custom_search
There are missing labels for the select dropdowns.
<select id="edit-custom-search-order-search-box-region" class="region-select region-select-block form-select region-select-processed" name="custom_search_order[search_box][region]">
<option selected="selected" value="block">Block</option>
<option value="popup">Popup</option>
</select>
Here's a quick screenshot from WebAIM's WAVE Toolbar:
Closed: outdated
1.9
User interface
It affects the ability of people with disabilities or special needs (such as blindness or color-blindness) to use Drupal.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.