A <pre> is preformatted, so the browser answered Enter by inserting a <br> and
keeping the caret inside it. A monospace last line therefore trapped everything
typed after it in monospace, with no way back to body by typing — and the style
menu could not get out either: `formatBlock('p')` on a line inside a <pre> nests a
<p> *inside* the block (`<pre>…<p>body</p></pre>`), so the text stayed monospace
and the note was left malformed. Reported as "monospace keeps going and I can
neither delete it nor switch to body".
Two fixes, both in the editor:
- Plain Enter in a <pre> now steps out: the tail after the caret becomes a
paragraph below the block, and that is where the caret lands. Shift+Enter is
untouched, so a soft line break still writes multi-line code inside the block —
Enter to leave, Shift+Enter to stay.
- The style menu converts anything touching a <pre> by hand, replacing the element
rather than reformatting inside it, so a monospace line goes cleanly back to body
(or to a heading) instead of nesting.
The split can leave an empty text node in the new paragraph, and a block with no
element and no text is not a caret host in Chromium — the next keystroke falls back
into the block above. So an empty paragraph is given a <br> to stand in, which was
the difference between the caret landing in the new line and the text reappearing
in the code.
e2e: a monospace line left on Enter is body after it, Shift+Enter stays monospace,
the menu returns it to body, and the whole thing survives the round-trip through
Markdown and a reload.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
