i’ve found a few issues in the review validation process.
The second issue is that when i successfully enter a review, the review is created but no message is shown to the user. The page just gets refreshed.
1. Thanks for the notice. We will fix it in next theme update.
As a temporary solution, you may edit woopress/woocommerce/single-product-reviews file and change this http://prntscr.com/kctp2t to $comment_form['comment_field'] .= '<div class="form-group"><label for="comment" class="control-label">'.__('Your Review', 'woopress').'</label><textarea id="comment" name="comment" cols="45" rows="12" aria-required="true" required></textarea></div>';
+ add this code in custom css: