1 We copy and paste a blockquoted paragraph plus a paragraph break.
2 The paragraph break shouldn't be inside the blockquote on paste.
3 You should see 'hello' (blockquoted), 'world' (not quoted, black text), 'hello' (blockquoted), empty paragraph.
4 See <rdar://problem/5368833<
31 After inserting "world":
38 | "world<#selection-caret>"