Hi Nicholas-
Both the BoldGrid Post and Page Builder and the Classic Editor remove excess whitespace in all your posts, which isn’t ideal for poets who need to use whitespace in their verse.
In your case, I’d recommend switching over to the default WordPress “Gutenberg” Editor, which features the Verse block, which is designed to preserve your whitespace the way you wrote it.
In order to switch editors, look for the Editor drop-down at the top of your post, and switch to the WordPress Editor: