Index: t3lib/class.t3lib_tceforms.php
===================================================================
--- t3lib/class.t3lib_tceforms.php	(révision 8642)
+++ t3lib/class.t3lib_tceforms.php	(copie de travail)
@@ -2541,7 +2541,10 @@
 						$PA['_valLang'] = $langChildren && !$langDisabled ? $editData['meta']['currentLangId'] : 'DEF';	// Default language, other options are "lUK" or whatever country code (independant of system!!!)
 						$PA['_lang'] = $lang;
 						$PA['_cshFile'] = ((isset($dataStruct['ROOT']['TCEforms']) && isset($dataStruct['ROOT']['TCEforms']['cshFile'])) ? $dataStruct['ROOT']['TCEforms']['cshFile'] : '');
-
+						if (is_array($dataStructArray['sheets'])) {
+							$tabIdentString = $GLOBALS['TBE_TEMPLATE']->getDynTabMenuId('TCEFORMS:flexform:' . $PA['itemFormElName'] . $PA['_lang']);
+							$this->pushToDynNestedStack('tab', $tabIdentString . '-' . (count($tabParts)+1));
+						}
 							// Render flexform:
 						$tRows = $this->getSingleField_typeFlex_draw(
 									$dataStruct['ROOT']['el'],
@@ -2557,8 +2560,10 @@
 
 			#			$item = '<div style=" position:absolute;">'.$item.'</div>';
 						//visibility:hidden;
+						if (is_array($dataStructArray['sheets'])) {
+							$this->popFromDynNestedStack('tab', $tabIdentString . '-' . (count($tabParts)+1));
+						}
 					} else $sheetContent='Data Structure ERROR: No ROOT element found for sheet "'.$sheet.'".';
-
 						// Add to tab:
 					$tabParts[] = array(
 						'label' => ($dataStruct['ROOT']['TCEforms']['sheetTitle'] ? $this->sL($dataStruct['ROOT']['TCEforms']['sheetTitle']) : $sheet),
@@ -2567,7 +2572,6 @@
 						'content' => $sheetContent
 					);
 				}
-
 				if (is_array($dataStructArray['sheets']))	{
 					$dividersToTabsBehaviour = (isset($GLOBALS['TCA'][$table]['ctrl']['dividers2tabs']) ? $GLOBALS['TCA'][$table]['ctrl']['dividers2tabs'] : 1);
 					$item.= $this->getDynTabMenu($tabParts, 'TCEFORMS:flexform:'.$PA['itemFormElName'].$PA['_lang'], $dividersToTabsBehaviour);
@@ -2647,7 +2651,6 @@
 
 		$output = '';
 		$mayRestructureFlexforms = $GLOBALS['BE_USER']->checkLanguageAccess(0);
-
 			// Data Structure array must be ... and array of course...
 		if (is_array($dataStruct))	{
 			foreach($dataStruct as $key => $value)	{	// Traversing fields in structure:
@@ -2661,7 +2664,6 @@
 
 						// If it's a "section" or "container":
 					if ($value['type']=='array')	{
-
 							// Creating IDs for form fields:
 							// It's important that the IDs "cascade" - otherwise we can't dynamically expand the flex form because this relies on simple string substitution of the first parts of the id values.
 						$thisId = t3lib_div::shortMd5(uniqid('id',true));	// This is a suffix used for forms on this level