Update: Dec 9, 3:10pm PST
Instagram has disabled photo integration with Twitter. As a result, photos are no longer appearing in Tweets or user photo galleries.
While tweeting links to Instagram photos is still possible, you can no longer view the photos on Twitter, as was previously the case.
Users are experiencing issues with viewing Instagram photos on Twitter. Issues include cropped images. This is due to Instagram disabling its Twitter cards integration, and as a result, photos are being displayed using a pre-cards experience. So, when users click on Tweets with an Instagram link, photos appear cropped.
Update: This issue is now resolved.
Some users may be experiencing a delay with new tweets in their timelines. Our engineers are currently working on this issue.
We’re committed to keeping Twitter a safe and open community. As part of that commitment, in instances when we believe an account may have been compromised, we reset the password and send an email letting the account owner know this has happened along with information about creating a new password. This is a routine part of our processes to protect our users.
In this case, we unintentionally reset passwords of a larger number of accounts, beyond those that we believed to have been compromised. We apologize for any inconvenience or confusion this may have caused.
As always, we recommend that people review these tips on how to keep their Twitter accounts secure: https://support.twitter.com/articles/76036-keeping-your-account-secure#