diff --git a/plugins/editors/codemirror/src/Provider/CodeMirrorProvider.php b/plugins/editors/codemirror/src/Provider/CodeMirrorProvider.php
index eefcf408c4fae..7e9d84070e355 100644
--- a/plugins/editors/codemirror/src/Provider/CodeMirrorProvider.php
+++ b/plugins/editors/codemirror/src/Provider/CodeMirrorProvider.php
@@ -91,6 +91,14 @@ public function display(string $name, string $content = '', array $attributes =
         $asset   = $params['asset'] ?? 0;
         $author  = $params['author'] ?? 0;
 
+        if (!$width && !$col) {
+            $width = '100%';
+        }
+
+        if (!$height && !$row) {
+            $height = '500px';
+        }
+
         // Must pass the field id to the buttons in this editor.
         $buttonsStr = $this->displayButtons($buttons, ['asset' => $asset, 'author' => $author, 'editorId' => $id]);
 
diff --git a/plugins/editors/none/src/Provider/EditorNoneProvider.php b/plugins/editors/none/src/Provider/EditorNoneProvider.php
index 69ca239de8088..0c01654dab8f6 100644
--- a/plugins/editors/none/src/Provider/EditorNoneProvider.php
+++ b/plugins/editors/none/src/Provider/EditorNoneProvider.php
@@ -90,6 +90,14 @@ public function display(string $name, string $content = '', array $attributes =
         $author   = $params['author'] ?? 0;
         $readonly = !empty($params['readonly']) ? ' readonly disabled' : '';
 
+        if (!$width && !$col) {
+            $width = '100%';
+        }
+
+        if (!$height && !$row) {
+            $height = '500px';
+        }
+
         if (!$id) {
             $id = $name;
         }
diff --git a/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php b/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php
index 340ebeb7ea927..59bdc68010e48 100644
--- a/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php
+++ b/plugins/editors/tinymce/src/PluginTraits/DisplayTrait.php
@@ -531,7 +531,7 @@ public function prepareTinyMCEUploadPath(string $path): string
                 'image_caption'     => true,
                 'importcss_append'  => true,
                 'height'            => $this->params->get('html_height', '550px'),
-                'width'             => $this->params->get('html_width', ''),
+                'width'             => $this->params->get('html_width', '100%'),
                 'elementpath'       => (bool) $levelParams->get('element_path', true),
                 'resize'            => $resizing,
                 'external_plugins'  => empty($externalPlugins) ? null : $externalPlugins,