Unrequested Copy Error

Often when moving from one folder to another I receive the following error message "An error occurred moving 'Downloads': You can't copy or move a folder into itself." And I totally agree with the message -- but that's not what I did! Instead a right mouse click yielded the error even though there had been no previous capture of the folder I right-clicked on. Please advise why this happens or how to prevent the error from occurring. Thank you.

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