Facebook’s Instagram redesigned its platform for horizontal scrolling—and the plan almost immediately went sideways.
The popular social media app’s unannounced refresh, which Instagram has since labeled a bug, took users by surprise Thursday. Instead of scrolling through posts vertically, some people were forced to swipe and tap left and right through their feeds, similar to how the app’s “stories” feature works. Users went berserk on social media, with #instagramupdate trending on Twitter. Instagram quickly reverted back to the original top-to-bottom scrolling feature even before everyone had seen the update.
“That was supposed to be a very small test that went broad by accident,” Adam Mosseri, the head of Instagram, tweeted alongside a grimacing emoji. “Should be fixed now.”