This problem has been solved
I am working on a game, which I am creating a UI for atm. However, there is this one image, that whenever I import it to unity (as a PNG file), it turns out distorted. This also happens no matter whether it is in ‘image’ form, ‘sprite’ form or whatever. This does not happen to any of the other sprites.
In these pictures you can see, how it looks in the standard Windows image viewer (how it should look), and how it looks in Unity (bottom):