this edit corrected an anomalous category
[[Category:[[Category:Kitchen scales]]]]
i assumed this redundant wikitext was added when i copypasted "Category:Kitchen scales" in uploadwizard. at the time of my upload, the target category already exists, so it's unlike the error when the cat does not yet exist ( [[Category:Category:Example]] ).
Steps to replicate the issue
- https://commons.wikimedia.org/wiki/Special:UploadWizard
- copypaste "Category:Example" when adding categories
- somehow, i'm not sure how exactly, resultant wikitext will have one redundant layer.