Bug: /v1/youtube/playlist/videos returns empty list randomly

The /v1/youtube/playlist/videos endpoint randomly returns empty video lists ([]) even for public playlists. This is a critical issue for building reliable application logic. Sample Playlist ID: PL2lHZe6m6l0GnR9UpguK3vYZpsgQzl1MH Limit used: 5000 The user confirms the playlist is public. Similar intermittent empty array issues have been noted in other YouTube endpoints [REF-RESEARCH:RZK13K].