Index: Classes/ExtDirect/ActionHandler.php
===================================================================
--- Classes/ExtDirect/ActionHandler.php	(revision 3359)
+++ Classes/ExtDirect/ActionHandler.php	(working copy)
@@ -418,6 +418,8 @@
 					'xtype' => 'checkboxgroup',
 					'itemCls' => 'x-check-group-alt',
 					'columns' => 1,
+					'style' => 'max-height: 100px',
+					'autoScroll' => true,
 					'items' => array(
 						$this->getReceipientsOfStage($nextStageId)
 					)
@@ -443,7 +445,7 @@
 
 	/**
 	 * Gets all assigned recipients of a particular stage.
-	 * 
+	 *
 	 * @param integer $stage
 	 * @return array
 	 */
@@ -453,11 +455,11 @@
 		$recipients = $this->getStageService()->getResponsibleBeUser($stage);
 
 		foreach ($recipients as $id => $name) {
-			$result[] = array(
+				$result[] = array(
 				'boxLabel' => $name,
-				'name' => 'receipients-' . $id,
-				'checked' => TRUE,
-			);
+					'name' => 'receipients-' . $id,
+					'checked' => TRUE,
+				);
 		}
 
 		return $result;