diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index d5336616d09..98e3b77fa3b 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -1967,14 +1967,21 @@ class ExtraFields
 
 				$visibility = 1;
 				if (isset($this->attributes[$object->table_element]['list'][$key])) {		// 'list' is option for visibility
-					$visibility = dol_eval($this->attributes[$object->table_element]['list'][$key], 1, 1, '1');
+					$visibility = intval(dol_eval($this->attributes[$object->table_element]['list'][$key], 1, 1, '1'));
 				}
 
 				$perms = 1;
 				if (isset($this->attributes[$object->table_element]['perms'][$key])) {
 					$perms = dol_eval($this->attributes[$object->table_element]['perms'][$key], 1, 1, '1');
 				}
-				if (empty($enabled)) {
+				if (empty($enabled)
+					|| (
+						$onlykey === '@GETPOSTISSET'
+						&& in_array($this->attributes[$object->table_element]['type'][$key], array('boolean', 'chkbxlst'))
+						&& in_array(abs($enabled), array(2, 5))
+						&& ! GETPOSTISSET('options_' . $key) // Update hidden checkboxes and multiselect only if they are provided
+					)
+				) {
 					continue;
 				}
 				if (empty($visibility)) {
diff --git a/htdocs/langs/en_US/dict.lang b/htdocs/langs/en_US/dict.lang
index 0524cf1ca18..00ab5a05f24 100644
--- a/htdocs/langs/en_US/dict.lang
+++ b/htdocs/langs/en_US/dict.lang
@@ -250,7 +250,9 @@ CountryMF=Saint Martin
 
 ##### Civilities #####
 CivilityMME=Mrs.
+CivilityMMEShort=Mrs.
 CivilityMR=Mr.
+CivilityMRShort=Mr.
 CivilityMLE=Ms.
 CivilityMTRE=Master
 CivilityDR=Doctor
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index f531d221aff..01469ee6b27 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -839,7 +839,7 @@ class Project extends CommonObject
 		}
 
 		// Fetch tasks
-		$this->getLinesArray($user);
+		$this->getLinesArray($user, 0);
 
 		// Delete tasks
 		$ret = $this->deleteTasks($user);
@@ -2210,14 +2210,15 @@ class Project extends CommonObject
 	/**
 	 * 	Create an array of tasks of current project
 	 *
-	 *  @param  User   $user       Object user we want project allowed to
-	 * 	@return int		           >0 if OK, <0 if KO
+	 *  @param  User	$user       		Object user we want project allowed to
+	 * @param	int		$loadRoleMode		1= will test Roles on task;  0 used in delete project action
+	 * 	@return int							>0 if OK, <0 if KO
 	 */
-	public function getLinesArray($user)
+	public function getLinesArray($user, $loadRoleMode = 1)
 	{
 		require_once DOL_DOCUMENT_ROOT.'/projet/class/task.class.php';
 		$taskstatic = new Task($this->db);
 
-		$this->lines = $taskstatic->getTasksArray(0, $user, $this->id, 0, 0);
+		$this->lines = $taskstatic->getTasksArray(0, $user, $this->id, 0, 0, '',  '-1', '', 0, 0, array(),  0,  array(),  0,  $loadRoleMode);
 	}
 }
diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index fc07a5fe82e..f6fcd4a1403 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -803,9 +803,10 @@ class Task extends CommonObjectLine
 	 * @param   int     $includebilltime    Calculate also the time to bill and billed
 	 * @param   array   $search_array_options Array of search
 	 * @param   int     $loadextras         Fetch all Extrafields on each task
+	 * @param	int		$loadRoleMode		1= will test Roles on task;  0 used in delete project action
 	 * @return 	array						Array of tasks
 	 */
-	public function getTasksArray($usert = null, $userp = null, $projectid = 0, $socid = 0, $mode = 0, $filteronproj = '', $filteronprojstatus = '-1', $morewherefilter = '', $filteronprojuser = 0, $filterontaskuser = 0, $extrafields = array(), $includebilltime = 0, $search_array_options = array(), $loadextras = 0)
+	public function getTasksArray($usert = null, $userp = null, $projectid = 0, $socid = 0, $mode = 0, $filteronproj = '', $filteronprojstatus = '-1', $morewherefilter = '', $filteronprojuser = 0, $filterontaskuser = 0, $extrafields = array(), $includebilltime = 0, $search_array_options = array(), $loadextras = 0, $loadRoleMode = 1)
 	{
 		global $conf, $hookmanager;
 
@@ -960,14 +961,16 @@ class Task extends CommonObjectLine
 
 				$obj = $this->db->fetch_object($resql);
 
-				if ((!$obj->public) && (is_object($userp))) {	// If not public project and we ask a filter on project owned by a user
-					if (!$this->getUserRolesForProjectsOrTasks($userp, 0, $obj->projectid, 0)) {
-						$error++;
+				if ($loadRoleMode) {
+					if ((!$obj->public) && (is_object($userp))) {    // If not public project and we ask a filter on project owned by a user
+						if (!$this->getUserRolesForProjectsOrTasks($userp, 0, $obj->projectid, 0)) {
+							$error++;
+						}
 					}
-				}
-				if (is_object($usert)) {							// If we ask a filter on a user affected to a task
-					if (!$this->getUserRolesForProjectsOrTasks(0, $usert, $obj->projectid, $obj->taskid)) {
-						$error++;
+					if (is_object($usert)) {                            // If we ask a filter on a user affected to a task
+						if (!$this->getUserRolesForProjectsOrTasks(0, $usert, $obj->projectid, $obj->taskid)) {
+							$error++;
+						}
 					}
 				}