I can confirm that the bug still exists.There was also no Django bug report opened about it, as mentioned before.
So what need to be done to repair the RSS feed?I don't know Django and also don't know Debian's internal server structure generating that feed.
Python 3.13.3 python3-feedparser 6.0.11-2 I opened a ticket at Django https://code.djangoproject.com/ticket/36397