The Wayback Machine - https://web.archive.org/all/20111006143816/http://dev.twitter.com/issues

API Issues

The Twitter API issue tracking system is used to report and give you updates on bugs found in our APIs and widgets. Before reporting any new issue, be sure to check developers discussions and the issues list below. Also note that existing issues are automatically linked to the documentation pages and discussion threads they're related to.
Summary Status Last update
Heightened 503s from Search API In progress 24 min 35 sec
ETA: Transient
Search API "from_user_id" doesn't match up with the proper Twitter "user_id" In progress 11 hours 26 min
ETA: Unknown
friends/id and followers/id to include cursor=-1 when it isn't supplied In progress 17 hours 29 min
ETA: Within a month
Site Streams connections are ceasing to send events for some users In progress 20 hours 6 min
ETA: Within a month
exclude_replies=true does not work with ATOM & RSS formats in user timeline requests Triage 23 hours 19 min
ETA: Unknown
502 errors when requesting data that takes too long to process In progress 1 day 18 hours
ETA: Unknown
After a user deletes a tweet a subsequent tweet can return a 404 response code despite being created Triage 1 day 19 hours
ETA: Unknown
Many 500-series errors do not respect requested response format Triage 1 day 19 hours
ETA: Unknown
502 errors occur frequently when reporting a user for spam In progress 1 day 19 hours
ETA: Unknown
t.co redirection behavior on Android web browser doesn't allow OS-hooks to resultant URLs Triage 6 days 20 hours
ETA: Unknown
Search API returning erratic results for geo-based queries Triage 1 week 3 days
ETA: Unknown
Search API & Search Widget occasionally return irrelevant results In progress 2 weeks 6 days
ETA: Within 3 weeks
REST API occasionally reports retweets as favorited when they shouldn't be Triage 3 weeks 22 hours
ETA: Unknown
The Search API does not support Tweet Entities like the REST & Streaming APIs In progress 3 weeks 1 day
ETA: Within a month
REST API responds with HTML instead of JSON or XML for certain error conditions Triage 3 weeks 1 day
ETA: Unknown