I've unsubscribed from a podcast. Why does it stilly appear in "My podcasts"?

The "My podcasts" section lists all podcasts you are subscribed to or for which you have episodes in your library. The icon of subscribed podcasts is overlayed with a tiny RSS icon in the lower left corner. A podcast will be finally disappear from the "My podcasts" section as soon as you've unsubscribed from it and you have no more episodes from it in your library (also keep in mind the finished section).

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