diff --git a/CHANGELOG_DEV.md b/CHANGELOG_DEV.md
index 711d834fba..4852c74c8a 100644
--- a/CHANGELOG_DEV.md
+++ b/CHANGELOG_DEV.md
@@ -13,4 +13,5 @@
 - Enh #5598: Added `cy` Welsh language
 - Fix #5338: Content topic/visibility changes are  re-indexed in search index
 - Enh #5535: Invisible users
-- Enh #5747: Switch Mailer Library to `Symfony Mailer` 
+- Enh #5747: Switch Mailer Library to `Symfony Mailer`
+- Fix #5765: Fix rendering content form on external modules
diff --git a/protected/humhub/modules/content/widgets/WallCreateContentForm.php b/protected/humhub/modules/content/widgets/WallCreateContentForm.php
index 5c2db7ae9a..42aa49d267 100644
--- a/protected/humhub/modules/content/widgets/WallCreateContentForm.php
+++ b/protected/humhub/modules/content/widgets/WallCreateContentForm.php
@@ -68,14 +68,24 @@ class WallCreateContentForm extends Widget
     /**
      * Returns the custom form implementation.
      *
-     * @param ActiveForm
      * @return string
      */
-    public function renderForm(ActiveForm $form): string
+    public function renderForm()
     {
         return '';
     }
 
+    /**
+     * Returns the custom form implementation.
+     *
+     * @param ActiveForm $form
+     * @return string
+     */
+    public function renderActiveForm(ActiveForm $form): string
+    {
+        return $this->renderForm();
+    }
+
     /**
      * @inheritdoc
      */
diff --git a/protected/humhub/modules/content/widgets/views/wallCreateContentForm.php b/protected/humhub/modules/content/widgets/views/wallCreateContentForm.php
index 446146d70c..882e3d797f 100644
--- a/protected/humhub/modules/content/widgets/views/wallCreateContentForm.php
+++ b/protected/humhub/modules/content/widgets/views/wallCreateContentForm.php
@@ -42,7 +42,7 @@ $pickerUrl = ($contentContainer instanceof Space) ? $contentContainer->createUrl
     <div class="panel-body" id="contentFormBody" style="display:none;" data-action-component="content.form.CreateForm" >
         <?php $form = ActiveForm::begin(['acknowledge' => true]); ?>
 
-        <?= $wallCreateContentForm->renderForm($form) ?>
+        <?= $wallCreateContentForm->renderActiveForm($form) ?>
 
         <div id="notifyUserContainer" class="form-group" style="margin-top: 15px;display:none;">
             <?= UserPickerField::widget([
diff --git a/protected/humhub/modules/post/widgets/Form.php b/protected/humhub/modules/post/widgets/Form.php
index b79923b613..b7a2f2a048 100644
--- a/protected/humhub/modules/post/widgets/Form.php
+++ b/protected/humhub/modules/post/widgets/Form.php
@@ -35,17 +35,35 @@ class Form extends WallCreateContentForm
     public $mentioningUrl = '/search/mentioning/space';
 
     /**
-     * @inheritdoc
+     * Get params for form rendering
+     *
+     * @param array $additionalParams
+     * @return array
      */
-    public function renderForm(ActiveForm $form): string
+    public function getRenderParams(array $additionalParams = []): array
     {
         $canCreatePostInSpace = ($this->contentContainer instanceof Space && $this->contentContainer->can(CreatePost::class));
 
-        return $this->render('form', [
-            'form' => $form,
+        return array_merge([
             'post' => new Post($this->contentContainer),
             'mentioningUrl' => $canCreatePostInSpace ? Url::to([$this->mentioningUrl, 'id' => $this->contentContainer->id]) : null,
-        ]);
+        ], $additionalParams);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function renderForm(): string
+    {
+        return $this->render('form', $this->getRenderParams());
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function renderActiveForm(ActiveForm $form): string
+    {
+        return $this->render('form', $this->getRenderParams(['form' => $form]));
     }
 
     /**