Orphaned watchlist entry cannot be removed via any API endpoint or Web UI

[casaper]

Summary

I have a watchlist entry that is permanently stuck — it appears in GET /users/{username}/watchlist/movies but every removal attempt fails because the underlying movie entity no longer exists in Trakt's database.

Affected entry

Field	Value
Watchlist item id	646678280
Movie title	Nosferatu
Movie trakt id	287264
Movie slug	nosferatu
listed_at	2022-01-02T17:41:16.000Z
tmdb	null
imdb	null

Full object as returned by the API:

{
  "type": "movie",
  "movie": {
    "ids": {
      "imdb": null,
      "slug": "nosferatu",
      "tmdb": null,
      "trakt": 287264
    },
    "year": null,
    "title": "Nosferatu"
  },
  "rank": 220,
  "id": 646678280,
  "listed_at": "2022-01-02T17:41:16.000Z",
  "notes": null,
  "my_rating": null
}

What I tried

1. POST /sync/watchlist/remove — by trakt id

{ "movies": [{ "ids": { "trakt": 287264 } }] }

Response: 200 OK but not_found.movies contains the entry — deleted.movies: 0.

2. POST /sync/watchlist/remove — by slug

{ "movies": [{ "ids": { "slug": "nosferatu" } }] }

Response: same — not_found, deleted.movies: 0.

3. DELETE /users/{username}/watchlist/646678280

Response: 400 Bad Request (empty body).

4. Trakt website

Both https://trakt.tv/movies/287264 and https://trakt.tv/movies/nosferatu return 404. The entry cannot be accessed or removed through the UI either.

Expected behaviour

At minimum, one of the removal endpoints should be able to delete a watchlist item by its watchlist item id (646678280), independent of whether the referenced movie entity still exists.

Actual behaviour

The entry is permanently stuck in the watchlist. It is visible in GET /users/{username}/watchlist/movies but cannot be removed through any available endpoint.

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Request: Please either expose a DELETE /users/{username}/watchlist/{item_id} endpoint that operates on the watchlist item row directly, or manually remove watchlist item 646678280 from the database.