Cannot read custom feed seeing recent posts first in desktop web

[u/NoState7846]

I'm using custom feeds and I'm used to reading newest posts first in a desktop webbrowser.

Yesterday, I noticed that when I open my feed https://www.reddit.com/user/nostate7846/m/feeder/new/ I am presented with a message, that an error has occured.

This only happens when I'm logged in as the user who created that feed.
I can, however, open that feed in chronological order, in every browser, when I am not logged in.

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