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Some users completely lost their minds when Instagram briefly changed its layout from scrolling up and down to side-to-side.
Some even threatened to stage a boycott, others said "No. Instagram. No."
But don't worry. Everything is back to normal with Instagram offering an explanation, saying it was just a test.
"Sorry about that, this was supposed to be a very small test but we went broader than we anticipated," tweeted Adam Mosseri, head of Instagram.
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The Menlo Park-based company also tweeted an update on Thursday, saying the change was "due to a bug."
Here's a look at some of the reactions after the update was rolled out:
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