--- ./program/lib/Roundcube/rcube_washtml.php-orig	2022-05-30 12:07:49.648193000 +0300
+++ ./program/lib/Roundcube/rcube_washtml.php	2022-07-29 11:31:56.285695000 +0300
@@ -359,7 +359,7 @@
                         $out = $value;
                     }
                 }
-                else if ($this->_css_prefix !== null && in_array($key, ['id', 'class', 'for'])) {
+                else if ($this->_css_prefix !== null && in_array($key, ['id', 'class', 'for', 'name'])) {
                     $out = preg_replace('/(\S+)/', $this->_css_prefix . '\1', $value);
                 }
                 else if ($key) {