diff --git a/app/controllers/admin/plugin.php b/app/controllers/admin/plugin.php
index ef635175640ed319bc17b0c973b4fd7cd1166f55..903c45ee1ae4003f93f4e89bc000b4160d83c158 100644
--- a/app/controllers/admin/plugin.php
+++ b/app/controllers/admin/plugin.php
@@ -591,10 +591,10 @@ class Admin_PluginController extends AuthenticatedController
                 'manifest_info_en' => [
                     'label' => sprintf(_('Standardbeschreibung des Plugins (%s)'), _('Englisch')),
                     'type' => 'info',
-                    'value' => $this->metadata['descriptionlong_en'] ?? $this->metadata['description_en'],
+                    'value' => $this->metadata['descriptionlong_en'] ?? $this->metadata['description_en'] ?? null,
                     'if' => "STUDIPFORM_SELECTEDLANGUAGES.description === 'en_GB'"
                 ],
-                'decription_mode' => [
+                'description_mode' => [
                     'label' => _('Modus der neuen Beschreibung'),
                     'type' => 'select',
                     'options' => [
diff --git a/lib/classes/forms/I18n_textInput.php b/lib/classes/forms/I18n_textInput.php
index ae563b094276776cdc1e0b8a868dd3c376959d94..4467c54d965f6749ed51bc4aa920889c34c610f2 100644
--- a/lib/classes/forms/I18n_textInput.php
+++ b/lib/classes/forms/I18n_textInput.php
@@ -16,7 +16,11 @@ class I18n_textInput extends Input
             $value = $this->value;
         } else {
             $value = [\I18NString::getDefaultLanguage() => $this->value->original()];
-            $value = json_encode(array_merge($value, $this->value->toArray()));
+            $value = array_merge($value, $this->value->toArray());
+            $value = array_map(function ($item) {
+                return $item ?? '';
+            }, $value);
+            $value = json_encode($value);
         }
         $template = $GLOBALS['template_factory']->open('forms/i18n_text_input');
         $template->title = $this->title;
diff --git a/lib/classes/forms/I18n_textareaInput.php b/lib/classes/forms/I18n_textareaInput.php
index 44ba1f2d5e07e52e4ac32e56c81a86c3c7b8b2a2..a544cb6d09990183f7133f5e0855d411efd6dbdd 100644
--- a/lib/classes/forms/I18n_textareaInput.php
+++ b/lib/classes/forms/I18n_textareaInput.php
@@ -15,8 +15,12 @@ class I18n_textareaInput extends Input
         if (!is_object($this->value)) {
             $value = $this->value;
         } else {
-            $value = [\I18NString::getDefaultLanguage() => $this->value->original()];
-            $value = json_encode(array_merge($value, $this->value->toArray()));
+            $value = [\I18NString::getDefaultLanguage() => $this->value->original() ?? ''];
+            $value = array_merge($value, $this->value->toArray());
+            $value = array_map(function ($item) {
+                return $item ?? '';
+            }, $value);
+            $value = json_encode($value);
         }
         $template = $GLOBALS['template_factory']->open('forms/i18n_textarea_input');
         $template->title = $this->title;
diff --git a/resources/assets/javascripts/bootstrap/forms.js b/resources/assets/javascripts/bootstrap/forms.js
index e379d422f1f08323ace4057f11db5d1a19657005..c34a0c1bf948ef6d9ebf1ff37b2477b7f1d04dcd 100644
--- a/resources/assets/javascripts/bootstrap/forms.js
+++ b/resources/assets/javascripts/bootstrap/forms.js
@@ -258,6 +258,7 @@ STUDIP.ready(function () {
                         params.STUDIPFORM_VALIDATED = false;
                         params.STUDIPFORM_REDIRECTURL = f.dataset.url;
                         params.STUDIPFORM_INPUTS_ORDER = [];
+                        params.STUDIPFORM_SELECTEDLANGUAGES = {};
                         for (let i in JSON.parse(f.dataset.inputs)) {
                             params.STUDIPFORM_INPUTS_ORDER.push(i);
                         }