In list view, mirrored items (within the same document) appear duplicated and identical. I don’t think it makes much sense in list view for mirrored items to appear duplicated, because the number of times they appear mirrored in the document already appears next to them (you can tell where in the document they appear by clicking on the numbered square to the right of the mirrored item), which makes it redundant and confusing. That’s why I consider it a mistake and not a matter of my design preferences.
