Wrong attachements show up "sometimes"

Lately (I think since the last Zotero update) I sometimes get a weird bug: wrong attachments show up under some main items. E.g. I have a book where I have added a note. When I open the attachments I sometimes see other stuff instead of the attachment, such as books from the same folder. If I restart zotero this the right attachments usually show up. I was hoping this would go away by itself, but as it hasn't I decided to report it.
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