Ticket #36961: 36961.diff

src/wp-includes/class-wp-user.php

@@ -480 +480 @@
          * @return array List of all capabilities for the user.
          */
         public function get_role_caps() {
+                $switch_site = false;
+                if ( is_multisite() && $this->db->get_blog_prefix() . 'capabilities' !== $this->cap_key ) {
+                        $base_prefix = $this->db->get_blog_prefix( 1 );
+                        if ( $base_prefix . 'capabilities' === $this->cap_key ) {
+                                $switch_site = 1;
+                        } else {
+                                $switch_site = absint( substr( $this->cap_key, strlen( $base_prefix ), - strlen( '_capabilities' ) ) );
+                        }
+
+                        switch_to_blog( $switch_site );
+                }
+
                 $wp_roles = wp_roles();
 
                 //Filter out caps that are not role names and assign to $this->roles
@@ -494 +506 @@
                 }
                 $this->allcaps = array_merge( (array) $this->allcaps, (array) $this->caps );
 
+                if ( $switch_site ) {
+                        restore_current_blog();
+                }
+
                 return $this->allcaps;
         }