Magento 2 temporary fix for Alphabetical sorting of Configurable product options

Just re-write the file vendor/magento/module-configurable-product/Model/ConfigurableAttributeData.php

<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\ConfigurableProduct\Model;
use Magento\Catalog\Model\Product;
use Magento\ConfigurableProduct\Model\Product\Type\Configurable\Attribute;
/**
* Class ConfigurableAttributeData
* @api
* @since 100.0.2
*/
class ConfigurableAttributeData
{
/**
* Get product attributes
*
* @param Product $product
* @param array $options
* @return array
*/
public function getAttributesData(Product $product, array $options = [])
{
$defaultValues = [];
$attributes = [];
foreach ($product->getTypeInstance()->getConfigurableAttributes($product) as $attribute) {
$attributeOptionsData = $this->getAttributeOptionsData($attribute, $options);
if ($attributeOptionsData) {
$productAttribute = $attribute->getProductAttribute();
$attributeId = $productAttribute->getId();
$attributes[$attributeId] = [
'id' => $attributeId,
'code' => $productAttribute->getAttributeCode(),
'label' => $productAttribute->getStoreLabel($product->getStoreId()),
'options' => $attributeOptionsData,
'position' => $attribute->getPosition(),
];
$defaultValues[$attributeId] = $this->getAttributeConfigValue($attributeId, $product);
}
}
return [
'attributes' => $attributes,
'defaultValues' => $defaultValues,
];
}
public function labelsort($a,$b){ return strcmp($a['label'], $b['label']);}
/**
* @param Attribute $attribute
* @param array $config
* @return array
*/
protected function getAttributeOptionsData($attribute, $config)
{
$attributeOptionsData = [];
foreach ($attribute->getOptions() as $attributeOption) {
$optionId = $attributeOption['value_index'];
$attributeOptionsData[] = [
'id' => $optionId,
'label' => $attributeOption['label'],
'products' => isset($config[$attribute->getAttributeId()][$optionId])
? $config[$attribute->getAttributeId()][$optionId]
: [],
];
}
if(count($attributeOptionsData) > 1){usort($attributeOptionsData,array($this,'labelsort'));}
return $attributeOptionsData;
}
/**
* @param int $attributeId
* @param Product $product
* @return mixed|null
*/
protected function getAttributeConfigValue($attributeId, $product)
{
return $product->hasPreconfiguredValues()
? $product->getPreconfiguredValues()->getData('super_attribute/' . $attributeId)
: null;
}
}