Joomla! 3.4.4, Virtuemart 3.0.9
Then save category VM add HTML symbols after tags <p>
This is error with w3c html validation "A numeric character reference expanded to carriage return."
I found /administrator/components/com_virtuemart/controllers/category.php
$data['category_description'] = vRequest::getHtml('category_description','');
And in /autotuning-aks.ru/administrator/components/com_virtuemart/helpers/vrequest.php
public static function getHtml($name, $default = '', $input = 0){
$tmp = self::get($name, $default,FILTER_UNSAFE_RAW,FILTER_FLAG_ENCODE_LOW,$input);
But in product save use ( /administrator/components/com_virtuemart/controllers/product.php)
$data['product_desc'] = vRequest::get('product_desc','');
$data['product_s_desc'] = vRequest::get('product_s_desc','');
$data['customtitle'] = vRequest::get('customtitle','');
I.e. save without filtering HTML symbols