Twitter API - user_timeline buggy/broke?

The twitter API user_timeline endpoint:

https://api.twitter.com/1/statuses/user_timeline.json

In the JSON response, the tweet objects being returned have an incorrect "id" element. In some cases, these "id" elements are pointing to an entirely different twitter user, and in other cases its completely invalid and 404s.

I did notice that the "id_str" element in each tweet object is correct referencing the tweet properly though.