diff --git a/htdocs/api/index.php b/htdocs/api/index.php
index 3f47731316c..a30fdcb9abc 100644
--- a/htdocs/api/index.php
+++ b/htdocs/api/index.php
@@ -88,17 +88,22 @@ if (preg_match('/api\/index\.php\/explorer/', $_SERVER["PHP_SELF"]) && ! empty($
 // index.php/xxx                                called by any REST client to run API
 
 
+$reg=array();
 preg_match('/index\.php\/([^\/]+)(.*)$/', $_SERVER["PHP_SELF"], $reg);
 // .../index.php/categories?sortfield=t.rowid&sortorder=ASC
 
 
 // Set the flag to say to refresh (when we reload the explorer, production must be for API call only)
-$refreshcache=false;
+/*$refreshcache=false;
 if (! empty($reg[1]) && $reg[1] == 'explorer' && ($reg[2] == '/swagger.json' || $reg[2] == '/swagger.json/root' || $reg[2] == '/resources.json' || $reg[2] == '/resources.json/root'))
 {
     $refreshcache=true;
-}
-
+}*/
+// When in production mode, a file api/temp/routes.php is created with the API available of current call. 
+// But, if we set $refreshcache to false, so it may have only one API in the routes.php file if we make a call for one API without
+// using the explorer. And when we make another call for another API, the API is not into the api/temp/routes.php and a 404 is returned. 
+// So we force refresh to each call.
+$refreshcache=true;
 
 $api = new DolibarrApi($db, '', $refreshcache);
 //var_dump($api->r->apiVersionMap);
@@ -115,7 +120,7 @@ UploadFormat::$allowedMimeTypes = array('image/jpeg', 'image/png', 'text/plain',
 
 
 
-// Call Explorer file for all APIs definitions
+// Call Explorer file for all APIs definitions (this part is slow)
 if (! empty($reg[1]) && $reg[1] == 'explorer' && ($reg[2] == '/swagger.json' || $reg[2] == '/swagger.json/root' || $reg[2] == '/resources.json' || $reg[2] == '/resources.json/root'))
 {
     // Scan all API files to load them
@@ -254,5 +259,6 @@ if (! empty($reg[1]) && ($reg[1] != 'explorer' || ($reg[2] != '/swagger.json' &&
 //var_dump($api->r->apiVersionMap);
 //exit;
 
-// Call API (we suppose we found it)
+// Call API (we suppose we found it).
+// The handle will use the file api/temp/routes.php to get data to run the API. If the file exists and the entry for API is not found, it will return 404.
 $api->r->handle();
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 5d7304e7580..2c2054e817e 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -6363,7 +6363,7 @@ abstract class CommonObject
 	 * @param 	array       $params         Optional parameters. Example: array('style'=>'class="oddeven"', 'colspan'=>$colspan)
 	 * @param 	string      $keysuffix      Suffix string to add after name and id of field (can be used to avoid duplicate names)
 	 * @param 	string      $keyprefix      Prefix string to add before name and id of field (can be used to avoid duplicate names)
-	 * @param	string		$onetrtd		All fields in same tr td
+	 * @param	string		$onetrtd		All fields in same tr td (TODO field not used ?)
 	 * @return 	string
 	 */
 	public function showOptionals($extrafields, $mode = 'view', $params = null, $keysuffix = '', $keyprefix = '', $onetrtd = 0)
@@ -6460,10 +6460,7 @@ abstract class CommonObject
 
 					$out .= '<tr id="'.$html_id.'" '.$csstyle.' class="'.$class.$this->element.'_extras_'.$key.'" '.$domData.' >';
 
-					if (! empty($conf->global->MAIN_EXTRAFIELDS_USE_TWO_COLUMS) && ($e % 2) == 0)
-					{
-						if (! empty($conf->global->MAIN_EXTRAFIELDS_USE_TWO_COLUMS) && ($e % 2) == 0) { $colspan='0'; }
-					}
+					if (! empty($conf->global->MAIN_EXTRAFIELDS_USE_TWO_COLUMS) && ($e % 2) == 0) { $colspan='0'; }
 
 					if ($action == 'selectlines') { $colspan++; }