diff --git a/src/Content/Conversation/Repository/UserDefinedChannel.php b/src/Content/Conversation/Repository/UserDefinedChannel.php
index eb39abefb6..f0a0f3efe8 100644
--- a/src/Content/Conversation/Repository/UserDefinedChannel.php
+++ b/src/Content/Conversation/Repository/UserDefinedChannel.php
@@ -197,6 +197,10 @@ class UserDefinedChannel extends \Friendica\BaseRepository
 			return [];
 		}
 
+		array_walk($tags, function (&$value) {
+			$value = mb_strtolower($value);
+		});
+
 		$this->db->insert('check-full-text-search', ['pid' => getmypid(), 'searchtext' => $searchtext], Database::INSERT_UPDATE);
 
 		$uids = [];
diff --git a/src/Model/Item.php b/src/Model/Item.php
index d49d6e2390..a9361f0fbb 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -1458,25 +1458,34 @@ class Item
 
 		$item = Post::selectFirst(['id', 'private', 'network', 'language', 'owner-id'], ['uri-id' => $uri_id, 'uid' => 0]);
 		if (empty($item['id'])) {
+			Logger::debug('Post not found', ['uri-id' => $uri_id]);
 			return;
 		}
 
 		if (($item['private'] != self::PUBLIC) || !in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
+			Logger::debug('Not a public post or no AP or DFRN post', ['uri-id' => $uri_id]);
 			return;
 		}
 
 		$engagement = DBA::selectFirst('post-engagement', ['searchtext', 'media-type'], ['uri-id' => $uri_id]);
 		if (empty($engagement['searchtext'])) {
+			Logger::debug('No engagement found', ['uri-id' => $uri_id]);
 			return;
 		}
 
 		$language = !empty($item['language']) ? array_key_first(json_decode($item['language'], true)) : '';
 		$tags     = array_column(Tag::getByURIId($uri_id, [Tag::HASHTAG]), 'name');
 
+		Logger::debug('Prepare check', ['uri-id' => $uri_id, 'language' => $language, 'tags' => $tags, 'searchtext' => $engagement['searchtext'], 'media_type' => $engagement['media-type'], 'owner' => $item['owner-id']]);
+
+		$count = 0;
 		foreach (DI::userDefinedChannel()->getMatchingChannelUsers($engagement['searchtext'], $language, $tags, $engagement['media-type'], $item['owner-id']) as $uid) {
-			Logger::debug('Reshare post', ['uid' => $uid, 'uri-id' => $uri_id, 'language' => $language, 'tags' => $tags, 'searchtext' => $engagement['searchtext'], 'media_type' => $engagement['media-type']]);
+			Logger::debug('Reshare post', ['uid' => $uid, 'uri-id' => $uri_id]);
 			self::performActivity($item['id'], 'announce', $uid);
+			$count++;
 		}
+
+		Logger::debug('Check done', ['uri-id' => $uri_id, 'count' => $count]);
 	}
 
 	/**
diff --git a/src/Model/Post/Engagement.php b/src/Model/Post/Engagement.php
index 4070112752..0476e08ca2 100644
--- a/src/Model/Post/Engagement.php
+++ b/src/Model/Post/Engagement.php
@@ -69,10 +69,14 @@ class Engagement
 			$store = Contact::hasFollowers($parent['owner-id']);
 		}
 
+		if (!$store && ($parent['owner-id'] != $parent['author-id'])) {
+			$store = Contact::hasFollowers($parent['author-id']);
+		}
+
 		if (!$store) {
 			$tagList = Relay::getSubscribedTags();
 			foreach (array_column(Tag::getByURIId($item['parent-uri-id'], [Tag::HASHTAG]), 'name') as $tag) {
-				if (in_array($tag, $tagList)) {
+				if (in_array(mb_strtolower($tag), $tagList)) {
 					$store = true;
 					break;
 				}
@@ -120,7 +124,7 @@ class Engagement
 			$ret = DBA::insert('post-engagement', $engagement);
 			Logger::debug('Engagement inserted', ['uri-id' => $engagement['uri-id'], 'ret' => $ret]);
 		}
-		return ($ret || !$exists) ? $engagement['uri-id'] : 0;
+		return ($ret && !$exists) ? $engagement['uri-id'] : 0;
 	}
 
 	public static function getSearchTextForActivity(string $content, int $author_id, array $tags, array $receivers): string