A number of Twitter users have been complaining that tweets that were retweeted by people they don’t follow are now showing in their timeline. The issue, thankfully, is not related to a new Twitter algorithm or recommendation system, as some had feared. Instead, the company confirmed that a bug affecting Android users was mislabeling the “social proof” tag on Retweets.
This is the part of the Retweet that tells you who, among the people you already do follow, had retweeted the post in question.
The company says that the social proof label is wrong, so the Android users were seeing tweets that looked like they had been retweeted by someone they don’t know.