--- /www/shared/TYPO3core/TYPO3_4-5/t3lib/class.t3lib_tceforms.php	2012-01-23 12:29:39.333734616 +0100
+++ class.t3lib_tceforms.php	2012-01-23 15:43:48.000000000 +0100
@@ -2627,6 +2627,18 @@
 						'linkTitle' => ($dataStruct['ROOT']['TCEforms']['sheetShortDescr'] ? $this->sL($dataStruct['ROOT']['TCEforms']['sheetShortDescr']) : ''),
 						'content' => $sheetContent
 					);
+
+					if ($dataStruct['ROOT']['TCEforms']['displayCond']) {
+						$splittedCondition = t3lib_div::trimExplode(':', $dataStruct['ROOT']['TCEforms']['displayCond']);
+						list($sheetName, $fieldName) = t3lib_div::trimExplode('.', $splittedCondition[1]);
+						$fieldValue = $editData['data'][$sheetName][$lang][$fieldName];
+						$splittedCondition[1] = $fieldName;
+						$dataStruct['ROOT']['TCEforms']['displayCond'] = join(':', $splittedCondition);
+						if (!$this->isDisplayCondition($dataStruct['ROOT']['TCEforms']['displayCond'], array($fieldName => $fieldValue), 'vDEF')) {
+							$tabParts = array_slice($tabParts, 0, count($tabParts)-1);
+						}
+					}
+
 				}
 
 				if (is_array($dataStructArray['sheets'])) {