diff --git a/core/modules/media_library/css/media_library.theme.css b/core/modules/media_library/css/media_library.theme.css
index 2710095f9f..1f66614e22 100644
--- a/core/modules/media_library/css/media_library.theme.css
+++ b/core/modules/media_library/css/media_library.theme.css
@@ -542,7 +542,7 @@
 .media-library-add-form__media {
   position: relative;
   display: flex;
-  padding: 1em 0 1em 0;
+  padding: 1em 0;
   border-bottom: 1px solid #c0c0c0;
   outline: none;
 }
diff --git a/core/modules/media_library/src/Form/AddFormBase.php b/core/modules/media_library/src/Form/AddFormBase.php
index 16b7908fd1..a3975be376 100644
--- a/core/modules/media_library/src/Form/AddFormBase.php
+++ b/core/modules/media_library/src/Form/AddFormBase.php
@@ -422,7 +422,7 @@ protected function buildSelectedItemElement(MediaInterface $media, array $form,
           '#title' => $this->t('Select @name', ['@name' => $media->label()]),
           '#title_display' => 'invisible',
           '#return_value' => $media->id(),
-          // The checkbox’s value is never processed by this form. It is present
+          // The checkbox's value is never processed by this form. It is present
           // for usability and accessibility reasons, and only used by
           // JavaScript to track whether or not this media item is selected. The
           // hidden 'current_selection' field is used to store the actual IDs of
@@ -785,6 +785,8 @@ protected function getSourceFieldName(MediaTypeInterface $media_type) {
    *   An array containing the pre-selected media items keyed by ID.
    */
   protected function getPreSelectedMediaItems(FormStateInterface $form_state) {
+    // Get the current select from the form state.
+    // @see ::processInputValues()
     $media_ids = $form_state->get('current_selection');
     if (!$media_ids) {
       return [];