Code section shows the same listing in some code posts

[maurerle]

I looked at this post: https://thenewstack.io/back-up-your-linux-server-with-borgmatic/
which has multiple code blocks, but I have also seen this on other web pages which have multiple code blocks like https://blog.ploeh.dk/ in my RSS reader.

The webpage has functional code blocks - I checked, that the HTML in the RSS feed is correct too.
And it even looks fine in the Nextcloud News app:

But in the Nextcloud Android App it looks like this:

One can see that after some listings - the first listing is repeated with an added index number.
Instead, it should correctly render the source code listing.