Fix for not being able to delete items

src/Database/DBStructure.php

@@ -1786,6 +1786,17 @@ class DBStructure
 						"username" => ["username(32)"],
 						]
 				];
+		$database["user-item"] = [
+				"comment" => "User specific item data",
+				"fields" => [
+						"iid" => ["type" => "int unsigned", "not null" => "1", "default" => "0", "primary" => "1", "relation" => ["item" => "id"], "comment" => "Item id"],
+						"uid" => ["type" => "mediumint unsigned", "not null" => "1", "default" => "0", "primary" => "1", "relation" => ["user" => "uid"], "comment" => "User id"],
+						"hidden" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => "Hidden marker"],
+						],
+				"indexes" => [
+						"PRIMARY" => ["uid", "iid"],
+						]
+				];
 		$database["workerqueue"] = [
 				"comment" => "Background tasks queue entries",
 				"fields" => [

src/Model/Contact.php

@@ -1049,7 +1049,7 @@ class Contact extends BaseObject
 
 		$contact = ($r[0]["contact-type"] == ACCOUNT_TYPE_COMMUNITY ? 'owner-id' : 'author-id');
 
-		$r = q(item_query() . " AND `item`.`" . $contact . "` = %d AND " . $sql .
+		$r = q(item_query(local_user()) . " AND `item`.`" . $contact . "` = %d AND " . $sql .
 			" AND `item`.`verb` = '%s' ORDER BY `item`.`created` DESC LIMIT %d, %d",
 			intval($author_id), intval(local_user()), dbesc(ACTIVITY_POST),
 			intval($a->pager['start']), intval($a->pager['itemspage'])

src/Model/Item.php

@@ -201,8 +201,16 @@ class Item extends BaseObject
 
 			// send the notification upstream/downstream
 			Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", "drop", intval($item['id']));
+		} elseif ($item['uid'] != 0) {
+
+			// When we delete just our local user copy of an item, we have to set an marker to hide it
+			$global_item = dba::selectFirst('item', ['id'], ['uri' => $item['uri'], 'uid' => 0, 'deleted' => false]);
+			if (DBM::is_result($global_item)) {
+				dba::update('user-item', ['hidden' => true], ['iid' => $global_item['id'], 'uid' => $item['uid']], true);
+			}
 		}
 
+
 		logger('Item with ID ' . $item_id . " has been deleted.", LOGGER_DEBUG);
 
 		return true;