This site: Comment refresh+edit removes new line characters.
1. Make a comment with new lines and empty lines (sample of what I mean: https://pastebin.com/raw/g53Y8NqD )
2. Refresh, edit, don't change anything and save.
3. Repeat step 2 until the text is just one continous string. (2-3 times would probably do)
Also, "change view" affects newlines as well but I'm not sure if it's the same cause from the above issue.