diff --git a/setup.php b/setup.php
index 8a67567..fb3cedd 100644
--- a/setup.php
+++ b/setup.php
@@ -1,6 +1,6 @@
 <?php
 
-define('PLUGIN_BUTTERFLY_VERSION', '2.3.0');
+define('PLUGIN_BUTTERFLY_VERSION', '2.3.1');
 
 // Minimal GLPI version, inclusive
 define("PLUGIN_BUTTERFLY_MIN_GLPI_VERSION", "11.0.0");
diff --git a/src/Config.php b/src/Config.php
index ad68821..28c61a7 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -257,30 +257,46 @@ class Config extends \CommonDBTM {
       );
       echo $value;
       echo '</textarea>';
-      echo '<div id="' . $containerId . '" class="d-none" style="height: 300px; border: 1px solid #dcdcdc"></div>';
+      echo '<div id="' . $containerId . '" class="d-none butterfly-css-monaco"></div>';
 
       echo \Html::scriptBlock('
          $(function() {
             if (window.GLPI === undefined || window.GLPI.Monaco === undefined) {
                return; // sem Monaco nesta página — fica o textarea
             }
-            var taId = ' . json_encode($textareaId, JSON_HEX_TAG | JSON_HEX_AMP) . ';
+            var $ta = $("#" + ' . json_encode($textareaId, JSON_HEX_TAG | JSON_HEX_AMP) . ');
             var containerId = ' . json_encode($containerId, JSON_HEX_TAG | JSON_HEX_AMP) . ';
-            var fieldName = ' . json_encode($fullName, JSON_HEX_TAG | JSON_HEX_AMP) . ';
-            window.GLPI.Monaco.createEditor(containerId, "scss", $("#" + taId).val(), []).then(() => {
-               $("#" + containerId).removeClass("d-none");
-               $("#" + taId).addClass("d-none").prop("disabled", true);
-               $("#" + containerId).closest("form").on("formdata", (e) => {
-                  const editors = window.monaco.editor.getEditors().filter(
-                     (editor) => editor._domElement.id === containerId
-                  );
-                  if (editors.length) {
-                     e.originalEvent.formData.delete(fieldName);
-                     e.originalEvent.formData.append(fieldName, editors[0].getValue());
-                  }
+            var $container = $("#" + containerId);
+
+            // O container precisa estar visível ANTES do create: com display:none
+            // o Monaco mede 0x0 e nasce sem área editável
+            $container.removeClass("d-none");
+            $ta.addClass("d-none");
+
+            window.GLPI.Monaco.createEditor(containerId, "scss", $ta.val(), [], {
+               _force_default_lang: true,
+               automaticLayout: true,
+               minimap: { enabled: false },
+               scrollBeyondLastLine: false,
+               fontSize: 13,
+               tabSize: 3
+            }).then((editor) => {
+               editor.editor.layout();
+               var $form = $container.closest("form");
+               // textarea segue habilitado (só oculto) e recebe o valor do editor.
+               // submit não dispara em form.submit() programático, por isso o
+               // formdata também: ele roda na montagem da entry list nos dois casos
+               $form.on("submit", function() {
+                  $ta.val(editor.editor.getValue());
+               });
+               $form.on("formdata", function(e) {
+                  $ta.val(editor.editor.getValue());
+                  e.originalEvent.formData.set($ta.attr("name"), editor.editor.getValue());
                });
             }).catch(() => {
-               // editor falhou — mantém o textarea funcional
+               // editor falhou — volta para o textarea comum
+               $container.addClass("d-none");
+               $ta.removeClass("d-none");
             });
          });
       ');
@@ -333,6 +349,11 @@ class Config extends \CommonDBTM {
          border: 1px solid #eee;
          font-family: monospace;
       }
+      .butterfly-css-monaco {
+         width: 100%;
+         height: 300px;
+         border: 1px solid #dcdcdc;
+      }
       .butterfly-themeselect-container .select2-selection__rendered,
       .butterfly-themeselect-dropdown .select2-results__option {
          height: 80px !important;