When exporting to .rtf, I have found the following bug:
When there is “underlining” at the beginning of a text, even though the subsequent text in the paragraph in Scrivener is not underlined, the exported .rtf file will have underlining in the entire paragraph.
If the underlining is on its own line, the following text is unformatted.
Thanks. There’s a formatting bug right now with carriage returns picking up formatting like underlining from the beginning of (maybe also the end of) a paragraph and not letting it go, so you may actually see the entire paragraph end up underlined while working in Scrivener–even if you remove it there, it’s still sticking in the .rtf because of this bug. It’s on the list, so Lee will get to it soon.