Idem

src/Compose/Field2Bt4.php

@@ -652,7 +652,7 @@ class Field2Bt4
 
         // Etape 4 - Suppression des valeurs null
         foreach($attributes as $name => $value) {
-            if (is_null($value) || $value == false || $value == '') {
+            if (is_null($value) || $value === false || $value === '') {
                 unset($attributes[$name]);
             }
         }