If a comment is wrapped in <small> tags, then the [ reply ] button is in small type, too. Is this a bug or a feature?
Ed: I think bug, as I wrote in T267949:
Sometimes the reply link will be inserted in a context that changes the style of it. While we won't be able to fix every edge case, and in some cases the inherited styling will be appropriate, the case of the unsigned template (at least on en.wiki) is pretty common, and the reply link should not be small as it makes it harder to click.