diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 4f17635c1c5..014fd0e6943 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2293,6 +2293,11 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 {
 	global $conf, $langs;
 
+	// If date undefined or "", we return ""
+	if (dol_strlen($time) == 0) {
+		return ''; // $time=0 allowed (it means 01/01/1970 00:00:00)
+	}
+
 	if ($tzoutput === 'auto') {
 		$tzoutput = (empty($conf) ? 'tzserver' : (isset($conf->tzuserinputkey) ? $conf->tzuserinputkey : 'tzserver'));
 	}
@@ -2316,7 +2321,7 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 					$user_date_tz = new DateTimeZone($offsettzstring);
 					$user_dt = new DateTime();
 					$user_dt->setTimezone($user_date_tz);
-					$user_dt->setTimestamp(($tzoutput == 'tzuser' || empty($time)) ? dol_now() : $time);
+					$user_dt->setTimestamp($tzoutput == 'tzuser' ? dol_now() : (int) $time);
 					$offsettz = $user_dt->getOffset();
 				} else {	// old method (The 'tzuser' was processed like the 'tzuserrel')
 					$offsettz = (empty($_SESSION['dol_tz']) ? 0 : $_SESSION['dol_tz']) * 60 * 60; // Will not be used anymore
@@ -2384,11 +2389,6 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 		$format = str_replace('yyyy', 'yy', $format);
 	}
 
-	// If date undefined or "", we return ""
-	if (dol_strlen($time) == 0) {
-		return ''; // $time=0 allowed (it means 01/01/1970 00:00:00)
-	}
-
 	// Clean format
 	if (preg_match('/%b/i', $format)) {		// There is some text to translate
 		// We inhibate translation to text made by strftime functions. We will use trans instead later.
diff --git a/htdocs/core/lib/security.lib.php b/htdocs/core/lib/security.lib.php
index 89fd9fe590b..b4aae4e5679 100644
--- a/htdocs/core/lib/security.lib.php
+++ b/htdocs/core/lib/security.lib.php
@@ -492,10 +492,14 @@ function restrictedArea($user, $features, $objectid = 0, $tableandshare = '', $f
 				if (!$user->rights->fournisseur->commande->supprimer) {
 					$deleteok = 0;
 				}
-			} elseif ($feature == 'payment_supplier') {
+			} elseif ($feature == 'payment_supplier') {	// Permission to delete a payment of an invoice is permission to edit an invoice.
 				if (!$user->rights->fournisseur->facture->creer) {
 					$deleteok = 0;
 				}
+			} elseif ($feature == 'payment') {	// Permission to delete a payment of an invoice is permission to edit an invoice.
+				if (!$user->rights->facture->creer) {
+						$deleteok = 0;
+				}
 			} elseif ($feature == 'banque') {
 				if (empty($user->rights->banque->modifier)) {
 					$deleteok = 0;
diff --git a/htdocs/modulebuilder/template/admin/setup.php b/htdocs/modulebuilder/template/admin/setup.php
index 7c6c6b2c04e..8a9937dfd2f 100644
--- a/htdocs/modulebuilder/template/admin/setup.php
+++ b/htdocs/modulebuilder/template/admin/setup.php
@@ -354,13 +354,14 @@ if ($action == 'edit') {
 					$result = $c->fetch($conf->global->{$constname});
 					if ($result < 0) {
 						setEventMessages(null, $c->errors, 'errors');
+					} elseif ($result > 0 ) {
+						$ways = $c->print_all_ways(' &gt;&gt; ', 'none', 0, 1); // $ways[0] = "ccc2 >> ccc2a >> ccc2a1" with html formated text
+						$toprint = array();
+						foreach ($ways as $way) {
+							$toprint[] = '<li class="select2-search-choice-dolibarr noborderoncategories"' . ($c->color ? ' style="background: #' . $c->color . ';"' : ' style="background: #bbb"') . '>' . $way . '</li>';
+						}
+						print '<div class="select2-container-multi-dolibarr" style="width: 90%;"><ul class="select2-choices-dolibarr">' . implode(' ', $toprint) . '</ul></div>';
 					}
-					$ways = $c->print_all_ways(' &gt;&gt; ', 'none', 0, 1); // $ways[0] = "ccc2 >> ccc2a >> ccc2a1" with html formated text
-					$toprint = array();
-					foreach ($ways as $way) {
-						$toprint[] = '<li class="select2-search-choice-dolibarr noborderoncategories"' . ($c->color ? ' style="background: #' . $c->color . ';"' : ' style="background: #bbb"') . '>' . $way . '</li>';
-					}
-					print '<div class="select2-container-multi-dolibarr" style="width: 90%;"><ul class="select2-choices-dolibarr">' . implode(' ', $toprint) . '</ul></div>';
 				} elseif (preg_match('/thirdparty_type/', $val['type'])) {
 					if ($conf->global->{$constname}==2) {
 						print $langs->trans("Prospect");
diff --git a/test/phpunit/DateLibTzFranceTest.php b/test/phpunit/DateLibTzFranceTest.php
index 4b63450c332..0db809be2f7 100644
--- a/test/phpunit/DateLibTzFranceTest.php
+++ b/test/phpunit/DateLibTzFranceTest.php
@@ -83,7 +83,10 @@ class DateLibTzFranceTest extends PHPUnit\Framework\TestCase
 		global $conf,$user,$langs,$db;
 
 		if (getServerTimeZoneString() != 'Europe/Paris' && getServerTimeZoneString() != 'Europe/Berlin') {
-			print "\n".__METHOD__." This PHPUnit test can be launched manually only onto a server with PHP timezone set to TZ=Europe/Paris, not a TZ=".getServerTimeZoneString().".\n"; die(1);
+			print "\n".__METHOD__." This PHPUnit test can be launched manually only onto a server with PHP timezone set to TZ=Europe/Paris, not a TZ=".getServerTimeZoneString().".\n";
+			print "You can launch the test from command line with:\n";
+			print "php -d date.timezone='Europe/Paris' phpunit DateLibTzFranceTest.php\n";
+			die(1);
 		}
 
 		$db->begin();	// This is to have all actions inside a transaction even if test launched without suite.