RSS feeds served by Cloudflare fail to import due to captcha page
A user reported that the following feed fails to import: https://blog.fefe.de/rss.xml
A quick test confirms that there's no error message, but no posts appear. The RSS feed appears in the list of feeds, with the expected title. Maybe there's an issue with parsing the feed? The items have no dates.
(Note: The issue of feeds without dates has been moved to #1708.)