diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 51a893832b1..38a2eee7555 100755
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -832,8 +832,9 @@ class Form
            	if ($conf->use_javascript_ajax && ! $forcecombo)
             {
 				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-            	$out.= ajax_combobox($htmlname, $events, $conf->global->COMPANY_USE_SEARCH_TO_SELECT);
-            	$nodatarole=' data-role="none"';
+            	$comboenhancement =ajax_combobox($htmlname, $events, $conf->global->COMPANY_USE_SEARCH_TO_SELECT);
+            	$out.= $comboenhancement;
+            	$nodatarole=($comboenhancement?' data-role="none"':'');
             }
 
             // Construct $out and $outarray
@@ -1037,8 +1038,9 @@ class Form
             if ($conf->use_javascript_ajax && ! $forcecombo && ! $options_only)
             {
 				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-            	$out.= ajax_combobox($htmlname, $events, $conf->global->CONTACT_USE_SEARCH_TO_SELECT);
-            	$nodatarole=' data-role="none"';
+            	$comboenhancement = ajax_combobox($htmlname, $events, $conf->global->CONTACT_USE_SEARCH_TO_SELECT);
+            	$out.= $comboenhancement;
+            	$nodatarole=($comboenhancement?' data-role="none"':'');
             }
 
             if ($htmlname != 'none' || $options_only) $out.= '<select class="flat'.($moreclass?' '.$moreclass:'').'" id="'.$htmlname.'" name="'.$htmlname.'"'.$nodatarole.'>';
@@ -1230,8 +1232,9 @@ class Form
 		        /*if ($conf->use_javascript_ajax)
 		        {
 					include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-		           $out.= ajax_combobox($htmlname);
-	            	$nodatarole=' data-role="none"';
+		            $comboenhancement = ajax_combobox($htmlname);
+                    $out.= $comboenhancement;
+                    $nodatarole=($comboenhancement?' data-role="none"':'');
 	            }*/
 
                 $out.= '<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'"'.($disabled?' disabled="disabled"':'').$nodatarole.'>';
@@ -4288,7 +4291,7 @@ class Form
 
     	// Try also magic suggest
 
-    	// Add data-role="none" to diable jmobile decoration
+    	// Add data-role="none" to disable jmobile decoration
     	$out = '<select data-role="none" id="'.$htmlname.'" class="multiselect" multiple="multiple" name="'.$htmlname.'[]"'.$option.($width?' style="width: '.$width.'px"':'').'>'."\n";
     	if (is_array($array) && ! empty($array))
     	{
@@ -4628,8 +4631,9 @@ class Form
 	        if ($conf->use_javascript_ajax)
 	        {
 				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-	           	$out.= ajax_combobox($htmlname);
-            	$nodatarole=' data-role="none"';
+	           	$comboenhancement = ajax_combobox($htmlname);
+                $out.= $comboenhancement;
+                $nodatarole=($comboenhancement?' data-role="none"':'');
             }
 
             $out.= '<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'"'.($disabled?' disabled="disabled"':'').$nodatarole.'>';
diff --git a/htdocs/core/class/html.formother.class.php b/htdocs/core/class/html.formother.class.php
index 68a7b677667..5bb491adf89 100644
--- a/htdocs/core/class/html.formother.class.php
+++ b/htdocs/core/class/html.formother.class.php
@@ -324,8 +324,9 @@ class FormOther
         if ($conf->use_javascript_ajax)
         {
             include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-            $moreforfilter.= ajax_combobox('select_categ_'.$htmlname);
-            $nodatarole=' data-role="none"';
+            $comboenhancement = ajax_combobox('select_categ_'.$htmlname);
+            $moreforfilter.=$comboenhancement;
+            $nodatarole=($comboenhancement?' data-role="none"':'');
         }
 
         // Print a select with each of them
@@ -373,8 +374,9 @@ class FormOther
         if ($conf->use_javascript_ajax)
         {
             include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-            $out.= ajax_combobox($htmlname);
-            $nodatarole=' data-role="none"';
+            $comboenhancement = ajax_combobox($htmlname);
+            $out.=$comboenhancement;
+            $nodatarole=($comboenhancement?' data-role="none"':'');
         }
         // Select each sales and print them in a select input
         $out.='<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'"'.$nodatarole.'>';
diff --git a/htdocs/core/class/html.formprojet.class.php b/htdocs/core/class/html.formprojet.class.php
index aba8abf78a3..e1487818438 100644
--- a/htdocs/core/class/html.formprojet.class.php
+++ b/htdocs/core/class/html.formprojet.class.php
@@ -91,8 +91,9 @@ class FormProjets
 			if (! empty($conf->use_javascript_ajax))
 			{
 				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
-	           	$out.= ajax_combobox($htmlname, '', 0, $forcefocus);
-            	$nodatarole=' data-role="none"';
+	           	$comboenhancement = ajax_combobox($htmlname, '', 0, $forcefocus);
+            	$out.=$comboenhancement;
+            	$nodatarole=($comboenhancement?' data-role="none"':'');
 			}
 
 			if (empty($option_only)) {
diff --git a/htdocs/core/lib/agenda.lib.php b/htdocs/core/lib/agenda.lib.php
index 72c3214610a..ff9398f6eeb 100644
--- a/htdocs/core/lib/agenda.lib.php
+++ b/htdocs/core/lib/agenda.lib.php
@@ -114,7 +114,7 @@ function print_actions_filter($form, $canedit, $status, $year, $month, $day, $sh
 		print '<td class="nowrap">';
 		print $langs->trans("Project").' &nbsp; ';
 		print '</td><td class="nowrap maxwidthonsmartphone">';
-		$formproject->select_projects($socid?$socid:-1, $pid, 'projectid');
+		$formproject->select_projects($socid?$socid:-1, $pid, 'projectid', 0);
 		print '</td></tr>';
 	}
 
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index ee876aa87c6..8bb98b6cdaa 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -322,7 +322,7 @@ 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 '';	// select2 works with jmobile
+	if (! empty($conf->dol_use_jmobile)) return '';	// select2 works with jmobile but it breaks the autosize feature of jmobile.
 	if (! empty($conf->global->MAIN_DISABLE_AJAX_COMBOX)) return '';
 	if (empty($conf->use_javascript_ajax)) return '';