11

This was a bug that was fixed. See The related section of the right sidebar is now completely missing for new questions.. It was an issue with their database.


2

This is status-bydesign according to this very old post over at Meta Stack Exchange: Linked and Related sections contain duplicate links to questions. Times may have changed, and recently, a new feature request was posted to have this changed: The same question should not be under both Linked and Related. So maybe it will change in the future.


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