Why are some images like this, like see the second one?

[aligajani]

http://d.pr/i/6YRL

[jonathanmoore]

I have no clue 😎

Without a link to an isolated demo where you have recreated the issue I wouldn't know how to help you out. Here is a helpful resource on why providing an isolated issue demo (with a link) is helpful: https://github.com/desandro/issues-agreement/#isolate-the-issue