Version 5.0.0 beta 7

system/Content/Tag.php

@@ -19,6 +19,7 @@ use Exception;
 use InvalidArgumentException;
 use IPS\Application;
 use IPS\Content;
+use IPS\core\FrontNavigation;
 use IPS\Data\Store;
 use IPS\DateTime;
 use IPS\Db;
@@ -654,6 +655,24 @@ class Tag extends Model
 			$photo->delete();
 		}
 
+		/* Delete any navigation items that reference this tag */
+		foreach( Db::i()->select( '*', 'core_menu', [ 'app=? and extension=?', 'core', 'Tags' ] ) as $row )
+		{
+			if( $row['config'] and $config = json_decode( $row['config'], true ) )
+			{
+				if( $config['id'] == $this->id )
+				{
+					Db::i()->delete( 'core_menu', [ 'id=?', $row['id'] ] );
+				}
+			}
+		}
+
+		try
+		{
+			unset( Store::i()->frontNavigation );
+		}
+		catch( OutOfRangeException ){}
+
 		/* Queue the background task to remove the tag from all currently tagged items */
 		Task::queue( 'core', 'UpdateTaggedItems', [ 'tag' => $this->text, 'delete' => true ], 5, [ 'tag' ] );
 	}