https://www.mediawiki.org/wiki/Topic:U6kb34h4mcg1gxwt (linked from the notification email about the creation of the topic) throws a BadMethodCallException, while https://www.mediawiki.org/wiki/Topic:U6kb34h4mcg1gxwt?action=single-view (available from the watchlist page) correctly shows the deletion log, at least with my account and logged out. The former should also show the deletion log.