[-] FO : in multistore payment module restrictions by customer group was not applied to specific shop

classes/Hook.php

@@ -324,7 +324,7 @@ class HookCore extends ObjectModel
 			if ($frontend)
 			{
 				$sql->leftJoin('module_group', 'mg', 'mg.`id_module` = m.`id_module`');
-				$sql->where('mg.`id_group` IN ('.implode(', ', $groups).')');
+				$sql->where('mg.id_shop = '.((int)$context->shop->id).' AND  mg.`id_group` IN ('.implode(', ', $groups).')');
 				$sql->groupBy('hm.id_hook, hm.id_module');
 			}