A "bug" caused the small test to be distributed much more widely, according to the company, and the feedback was instant. Should be fixed now.
Nearly as soon as the change was made, users took to Twitter to complain and demand the return of the familiar up-and-down scrolling method. In the horizontal feed, you have to flick left or right every time you want to see a new photo.
The terms "New Instagram" and #instagram update were both trending in Boston.
Given the extremely negative response that the updated received from its users, Instagram may think twice about releasing the update to the public. Instagram initially tested the design in October, exclusively on the Explore page.
A number of us at Engadget have the new feed orientation as well, though for some people, the new feature hasn't yet reached all of their accounts. First, users have to uninstall Instagram from their phone by going to "Settings" and then "Apps and notifications". "We apologize for any confusion", a representative said.
It's not out of the question that the horizontal interface might come back in the future, after Instagram tweaks it a bit further.