Instagram is now owned and operated by Facebook.
Recently, Instagram switched to a landscape based horizontal feed.
This brief shift to horizontal feed was hated by almost every user on the platform.
The overall UI of this horizontal feed was similar to the vertical feed.
Well, the horizontal feed was somewhat similar to the one we see on Tinder.
A progress bar at the bottom of the feed confirms that you have successfully switched between posts.
Consequently, not every user experienced this switch from vertical to horizontal feed.
That said, Instagram has now reverted every affected user back to the normal vertical feed.
source: www.techworm.net