Hello,
Please add this code to the Theme Settings > Custom CSS > Global:
.woocommerce-Tabs-panel--description p {
text-align: justify;
}
Please pay attention, you need to remove aligning in the text area if any, as they https://gyazo.com/97ca0671641b18c7a06c851f13548256
Please make the full backup of your site and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by WooСommerce.
Best Regards