diff --git a/CHANGELOG.md b/CHANGELOG.md
index 63f298f..0f5280e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,11 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [1.3.0]
+
+- Handled webform categories now being an array.
+- Rendered wizard pages as 'details' elements in previews.
+
 ### Updated
 
 ## [1.2.1]
@@ -50,7 +55,8 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 
 - Added OS2Forms sync module
 
-[Unreleased]: https://github.com/itk-dev/os2forms_sync/compare/1.2.1...HEAD
+[Unreleased]: https://github.com/itk-dev/os2forms_sync/compare/1.3.0...HEAD
+[1.3.0]: https://github.com/itk-dev/os2forms_sync/compare/1.2.1...1.3.0
 [1.2.1]: https://github.com/itk-dev/os2forms_sync/compare/1.2.0...1.2.1
 [1.2.0]: https://github.com/itk-dev/os2forms_sync/compare/1.1.3...1.2.0
 [1.1.3]: https://github.com/itk-dev/os2forms_sync/compare/1.1.2...1.1.3
diff --git a/src/Controller/WebformController.php b/src/Controller/WebformController.php
index c4e3233..42b5d03 100644
--- a/src/Controller/WebformController.php
+++ b/src/Controller/WebformController.php
@@ -184,7 +184,7 @@ public function index(): array {
               '#type' => 'container',
               '#attributes' => [
                 'class' => ['category'],
-                'data-indexed' => strip_tags($attributes['category']),
+                'data-indexed' => implode(', ', json_decode($attributes['categories'])),
               ],
 
               'label' => [
@@ -199,7 +199,7 @@ public function index(): array {
                 '#attributes' => [
                   'class' => ['value'],
                 ],
-                '#value' => $attributes['category'],
+                '#value' => implode(', ', json_decode($attributes['categories'])),
               ],
             ],
 
diff --git a/src/Helper/JsonAPISerializer.php b/src/Helper/JsonAPISerializer.php
index 13b6c97..b10e154 100644
--- a/src/Helper/JsonAPISerializer.php
+++ b/src/Helper/JsonAPISerializer.php
@@ -80,13 +80,15 @@ static function ($key) {
         return in_array($key, [
           'title',
           'description',
-          'category',
+          'categories',
           'elements',
         ]);
       },
       ARRAY_FILTER_USE_KEY
     );
 
+    $attributes['categories'] = json_encode($attributes['categories']);
+
     $attributes = array_map('html_entity_decode', $attributes);
 
     if (isset($attributes['elements'])) {
diff --git a/src/Helper/WebformHelper.php b/src/Helper/WebformHelper.php
index 520892e..1ec4f48 100644
--- a/src/Helper/WebformHelper.php
+++ b/src/Helper/WebformHelper.php
@@ -175,6 +175,26 @@ public function theme(array $existing, string $type, string $theme, string $path
    * @phpstan-return array<string, mixed>
    */
   public function getSubmissionForm(array $elements): array {
+
+    // Webforms that are rendered here are not a part of the database yet.
+    // As a consequence, any element that attempts to load the webform will be
+    // unable to do so.
+    // Wizard pages attempt to do so in WebformWizardPage::showPage, so we
+    // display these as 'details' instead and indicate that they originally
+    // are pages in their titles.
+    $isFirst = TRUE;
+    foreach ($elements as &$element) {
+      if (($element['#type'] ?? NULL) === 'webform_wizard_page') {
+        if ($isFirst) {
+          $element['#open'] = TRUE;
+          $isFirst = FALSE;
+        }
+
+        $element['#type'] = 'details';
+        $element['#title'] = (string) $this->t('%title% (wizard page)', ['%title%' => $element['#title']]);
+      }
+    }
+
     $webform = Webform::create([
       'id' => (new Random())->name(32),
       'elements' => Yaml::encode($elements),