diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 6c5ed3c23f0..713b18582eb 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1679,7 +1679,7 @@ class Form
 				$out .= ajax_combobox($htmlname);
 
 				// do not use maxwidthonsmartphone by default. Set it by caller so auto size to 100% will work when not defined
-				$out.= '<select class="flat'.($morecss?' minwidth100 '.$morecss:' minwidth200').'" id="'.$htmlname.'" name="'.$htmlname.($multiple ? '[]' : '').'" '.($multiple ? 'multiple' : '').' '.($disabled?' disabled':'').'>';
+				$out.= '<select class="flat'.($morecss?' minwidth100imp '.$morecss:' minwidth200').'" id="'.$htmlname.'" name="'.$htmlname.($multiple ? '[]' : '').'" '.($multiple ? 'multiple' : '').' '.($disabled?' disabled':'').'>';
 				if ($show_empty && !$multiple) $out.= '<option value="-1"'.((empty($selected) || in_array(-1, $selected))?' selected':'').'>&nbsp;</option>'."\n";
 				if ($show_every) $out.= '<option value="-2"'.((in_array(-2, $selected))?' selected':'').'>-- '.$langs->trans("Everybody").' --</option>'."\n";
 
diff --git a/htdocs/core/class/html.formprojet.class.php b/htdocs/core/class/html.formprojet.class.php
index 057f977fadb..8e01e93b66e 100644
--- a/htdocs/core/class/html.formprojet.class.php
+++ b/htdocs/core/class/html.formprojet.class.php
@@ -367,7 +367,7 @@ class FormProjets
 				include_once DOL_DOCUMENT_ROOT . '/core/lib/ajax.lib.php';
 	           	$comboenhancement = ajax_combobox($htmlname, '', 0, $forcefocus);
             	$out.=$comboenhancement;
-            	$morecss='minwidth200 maxwidth500';
+            	$morecss='minwidth200imp maxwidth500';
 			}
 
 			if (empty($option_only)) {
diff --git a/htdocs/projet/tasks/time.php b/htdocs/projet/tasks/time.php
index 766c2b38e2d..8501ae3c88c 100644
--- a/htdocs/projet/tasks/time.php
+++ b/htdocs/projet/tasks/time.php
@@ -959,6 +959,7 @@ if (($id > 0 || ! empty($ref)) || $projectidforalltimes > 0)
 			print '<!-- table to add time spent -->'."\n";
             if (! empty($id)) print '<input type="hidden" name="taskid" value="'.$id.'">';
 
+            print '<div class="div-table-responsive-no-min">';		// You can use div-table-responsive-no-min if you dont need reserved height for your table
 			print '<table class="noborder nohover" width="100%">';
 
 			print '<tr class="liste_titre">';
@@ -1002,7 +1003,7 @@ if (($id > 0 || ! empty($ref)) || $projectidforalltimes > 0)
 				else $userid = $contactsofproject[0];
 
 				if ($projectstatic->public) $contactsofproject = array();
-				print $form->select_dolusers((GETPOST('userid')?GETPOST('userid'):$userid), 'userid', 0, '', 0, '', $contactsofproject, 0, 0, 0, '', 0, $langs->trans("ResourceNotAssignedToProject"), 'maxwidth200');
+				print $form->select_dolusers((GETPOST('userid', 'int')?GETPOST('userid', 'int'):$userid), 'userid', 0, '', 0, '', $contactsofproject, 0, 0, 0, '', 0, $langs->trans("ResourceNotAssignedToProject"), 'maxwidth200');
 			}
 			else
 			{
@@ -1044,6 +1045,7 @@ if (($id > 0 || ! empty($ref)) || $projectidforalltimes > 0)
 			print '</td></tr>';
 
 			print '</table>';
+			print '</div>';
 
 			print '<br>';
 		}