Duplicates in This PC "other" section (Opus 10 on Windows 10)

Just installed Windows 10 and Opus 10.5.7. Under This PC, the "Other" section shows duplicates for many system folders. I have changed the location of documents and downloads to the D: drive but even music, pictures and videos are also appearing as duplicates. What's up with that?

Those folders come from Windows itself.

Newer versions of Opus filter those out.

Opus 10 came out in 2011 and was last updated in 2013. Windows 10 came out in 2015.