diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index eec9318f9ba..936a3b9cb53 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1342,6 +1342,12 @@ class Form
                 $out.= '<option value="">'.$langs->trans("None").'</option>';
             }
             $out.= '</select>';
+            
+       		if (! empty($conf->use_javascript_ajax) && ! $show_empty)	// ajaxcombo works only on list with no empty value because of &nbsp;
+			{
+				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
+				$out.= ajax_combobox($htmlname);
+			}
         }
         else
         {
@@ -4566,10 +4572,17 @@ class Form
             }
             else
             {
-                $out.= '<select class="flat" name="'.$htmlname.'" disabled="disabled">';
-                $out.= '<option value="">'.$langs->trans("None").'</option>';
+                $out.= '<select class="flat" name="'.$htmlname.'"'.($show_empty?'':' disabled="disabled"').'>';
+                if ($show_empty) $out.= '<option value="-1"'.($selected==-1?' selected="selected"':'').'></option>'."\n";
+                $out.= '<option value="" disabled="disabled">'.$langs->trans("NoUserGroupDefined").'</option>';
             }
             $out.= '</select>';
+
+            if (! empty($conf->use_javascript_ajax) && ! $show_empty)	// ajax combo works only when no empty value
+			{
+				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
+				$out.= ajax_combobox($htmlname);
+			}
         }
         else
         {
diff --git a/htdocs/core/lib/agenda.lib.php b/htdocs/core/lib/agenda.lib.php
index 236f418dd86..3d51490f6b2 100644
--- a/htdocs/core/lib/agenda.lib.php
+++ b/htdocs/core/lib/agenda.lib.php
@@ -70,36 +70,13 @@ function print_actions_filter($form, $canedit, $status, $year, $month, $day, $sh
 	{
 		print '<tr>';
 		print '<td class="nowrap">';
-		//print $langs->trans("ActionsAskedBy");
-		//print ' &nbsp;</td><td class="nowrap maxwidthonsmartphone">';
-		//print $form->select_dolusers($filtera, 'userasked', 1, '', ! $canedit);
-		//print ' &nbsp; '.$langs->trans("or") . ' ';
 		print $langs->trans("ActionsOwnedBy").' &nbsp; ';
 		print '</td><td class="nowrap maxwidthonsmartphone">';
-		//print $langs->trans("User");
 		print $form->select_dolusers($filtert, 'usertodo', 1, '', ! $canedit);
-		if (! empty($conf->use_javascript_ajax))
-		{
-			include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-			print ajax_combobox('usertodo');
-		}
-		if (empty($conf->dol_optimize_smallscreen)) print ' &nbsp; '.$langs->trans("or") . ' ';
-		else print '<br>';
-		print $langs->trans("Group").' &nbsp; ';
+		if (empty($conf->dol_optimize_smallscreen)) print ' &nbsp; '.$langs->trans("or") . ' '.$langs->trans("Group").' &nbsp; ';
 		print $form->select_dolgroups($usergroupid, 'usergroup', 1, '', ! $canedit);
-		if (! empty($conf->use_javascript_ajax))
-		{
-			print ajax_combobox('usergroup');
-		}
 		print '</td></tr>';
 
-		/*print '<tr>';
-		print '<td class="nowrap">';
-		print $langs->trans("or") . ' ' . $langs->trans("ActionsDoneBy");
-		print ' &nbsp;</td><td class="nowrap maxwidthonsmartphone">';
-		print $form->select_dolusers($filterd, 'userdone', 1, '', ! $canedit);
-		print '</td></tr>';*/
-
 		include_once DOL_DOCUMENT_ROOT . '/core/class/html.formactions.class.php';
 		$formactions=new FormActions($db);
 
@@ -147,16 +124,18 @@ function print_actions_filter($form, $canedit, $status, $year, $month, $day, $sh
 		print '<tr>';
 		print '<td class="nowrap">'.$langs->trans("WorkingTimeRange").'</td>';
 		print "<td class='nowrap maxwidthonsmartphone'>";
-		print '<input type="number" class="short" name="begin_h" value="'.$begin_h.'" min="0" max="23"> - ';
+		print '<input type="number" class="short" name="begin_h" value="'.$begin_h.'" min="0" max="23">';
+		if (empty($conf->dol_use_jmobile)) print ' - ';
 		print '<input type="number" class="short" name="end_h" value="'.$end_h.'" min="1" max="24">';
-		print ' '.$langs->trans("H");
+		if (empty($conf->dol_use_jmobile)) print ' '.$langs->trans("H");
 		print '</td></tr>';
 
 		// Filter on days
 		print '<tr>';
 		print '<td class="nowrap">'.$langs->trans("WorkingDaysRange").'</td>';
 		print "<td class='nowrap maxwidthonsmartphone'>";
-		print '<input type="number" class="short" name="begin_d" value="'.$begin_d.'" min="1" max="7"> - ';
+		print '<input type="number" class="short" name="begin_d" value="'.$begin_d.'" min="1" max="7">';
+		if (empty($conf->dol_use_jmobile)) print ' - ';
 		print '<input type="number" class="short" name="end_d" value="'.$end_d.'" min="1" max="7">';
 		print '</td></tr>';
 	}
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index 3966b29f874..74e715f7b4a 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -321,8 +321,10 @@ function ajax_combobox($htmlname, $events=array(), $minLengthToAutocomplete=0)
 	global $conf;
 
 	if (! empty($conf->browser->phone)) return '';	// combobox disabled for smartphones (does not works)
+	if (! empty($conf->dol_use_jmobile)) return '';	// combobox with jmobile (does not works)
 	if (! empty($conf->global->MAIN_DISABLE_AJAX_COMBOX)) return '';
-
+	if (empty($conf->use_javascript_ajax)) return ''; 
+	
 	/* Some properties for combobox:
 	minLengthToAutocomplete: 2,
 	comboboxContainerClass: "comboboxContainer",
diff --git a/htdocs/expedition/class/expedition.class.php b/htdocs/expedition/class/expedition.class.php
index 7d96d1de12c..f9484c1175e 100644
--- a/htdocs/expedition/class/expedition.class.php
+++ b/htdocs/expedition/class/expedition.class.php
@@ -604,9 +604,11 @@ class Expedition extends CommonObject
 
 					if (! empty($conf->productbatch->enabled)) {
 						$details=ExpeditionLigneBatch::FetchAll($this->db,$obj->rowid);
-						foreach ($details as $dbatch) {
-							$result=$mouvS->livraison_batch($dbatch->fk_origin_stock,$dbatch->dluo_qty);
-							if ($result < 0) { $error++; $this->errors[]=$mouvS->$error; break 2; }
+						if (! empty($details)) {
+							foreach ($details as $dbatch) {
+								$result=$mouvS->livraison_batch($dbatch->fk_origin_stock,$dbatch->dluo_qty);
+								if ($result < 0) { $error++; $this->errors[]=$mouvS->$error; break 2; }
+							}
 						}
 					}
 				}
diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index cbc4deb40d7..fd07d379a44 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -169,6 +169,7 @@ User=User
 Users=Users
 Group=Group
 Groups=Groups
+NoUserGroupDefined=No user group defined
 Password=Password
 PasswordRetype=Retype your password
 NoteSomeFeaturesAreDisabled=Note that a lot of features/modules are disabled in this demonstration.