Why it's flagged. Lines look like ASCII art or preformatted text, where the exact spacing matters. Ordinary paragraph settings can squash it.
How serious. Worth fixing when the block isn't in a style you declared for it; Carried through automatically when it is.
How to fix it. In any editor:
- Apply the Code Block style to the lines, or put
[[code block]]before the first paragraph and[[/code block]]after the last. - If it's a picture of text, consider using an image instead.
- Upload again.
When to leave it. If it's already in a style you declared for it, leave it. If it looks right in a proof, correct as is in the full report stops it being flagged.