With the temporary wikitext editor, the interface for creating a new section now has a distracting focus change:

1. Go to a talk page.
2. Click "Add new section".
3. Observe that once the full editor is ready, the title input is briefly focused, but the focus moves to the text immediately after.

But unless you started typing already, the title is probably the first thing you want to edit.

Perhaps it would be best if the temporary wikitext editor had a single line title input in this case as well, so the focus could be kept on the title, unless the user already moved on to the content.