Hello there,
When I'm doing a call on my mentions, the latest tweet is from someone I dont follow. With https://dev.twitter.com/console I can see that for a call to http://api.twitter.com/1/statuses/mentions.json?include_rts=t the user object has the following attribute to false. If I do the same call but with the include_entities parameter set to t http://api.twitter.com/1/statuses/mentions.json?include_rts=t&include_entities=t the user object has the attribute following to true.
Hope it helps, let me know if you need anything else.
--
Jeremy
Updates
This is a duplicate of Following attribute of user object in tweet object is sometimes incorrect