Not sure when this started but articles from Spiegel Online International are being truncated.
The recipe uses:
https://www.spiegel.de/international/index.rss
An example article is:
https://www.spiegel.de/international...e-5af14caf61c2
The downloaded article ends with this paragraph:

which according to the original web page is less than half way through.
I don't know if there's some kind of logic on the Calibre side that determines where an article ends but it always ends at the end of a paragraph rather than somewhere random.
Also, if anyone knows how to fix the handling of certain characters like ’ and é that would be useful as it makes reading a bit of a chore.