Do not check parent access for library items

+++ b/src/ParagraphAccessControlHandler.php
@@ -24,9 +24,15 @@ class ParagraphAccessControlHandler extends EntityAccessControlHandler {
+      $access_result = AccessResult::allowedIf($operation != 'view' || $paragraph->status->value);
+      // Library items have no support for parent's entity access check.
+      if ($paragraph->getParentEntity()->getEntityTypeId() == 'paragraphs_library_item') {
+        return $access_result;
+      }
+      else {
+        $parent_access = $paragraph->getParentEntity()->access($operation, $account, TRUE);
+      }
+      return $access_result->andIf($parent_access);
     }

the logic here is strange, in one case you return and then in else define an object that use after the if.

You can inver this with creating $access_result, if (not library) { call and add parent check} and then return.

Also, either the patch is drunk or we have a dead return line below that can be removed?

+++ b/src/ParagraphAccessControlHandler.php
@@ -20,15 +20,18 @@ class ParagraphAccessControlHandler extends EntityAccessControlHandler {
+      // Library items have no support for parent's entity access check.
+      if ($paragraph->getParentEntity()->getEntityTypeId() != 'paragraphs_library_item') {

I think that's just "for parent entity access check" (ing?). The parent is the entity, parent's entity sounds like the entity of the parent.

Can be fixed on commit.

Ugly, but committed. :-)