Instagram supports line breaks but not always consecutive line breaks.


Example: https://www.instagram.com/p/BSCoDz7Du7k/ has 2 \n line breaks, one before "This post is in celebration..." and one before "Photos by...".

Single line breaks work, example: "Apples are\nGood for you"

Apples are
Good for you

Consecutive line breaks sometimes become spaces, example: "Apples are\nGood for you\n\n!!!"

Apples are
Good for you !!!


but "Apples are\nGood for you\n\nEat more!" is okay

Apples are
Good for you

Eat more!