Follow KDKA-TV: Facebook | Twitter

PITTSBURGH (CBS) — Instagram is apologizing after social media erupted over what was thought to be a new update.

READ MORE: Duquesne Police Searching For Missing 14-Year-Old Douglass-Craig Brown

On Thursday, many users had to tap or swipe horizontally through their Instagram feed, versus vertically. It was like how users scroll through the Instagram story feature.

READ MORE: Pennsylvania Judge Begins Review To Pick New Congressional District Maps

However, Instagram head Adam Mosseri said the update was a test that went broad by accident.

“That was supposed to be a very small test that went broad by accident. Should be fixed now. If you’re still seeing it simply restart the app,” said Mosseri on Twitter.

MORE NEWS: Former Pirate Gene Clines, World Series Winner And Member Of All-Minority Lineup, Dies

Many users took to Twitter to vent their feelings.