[JavaScript Error: "'annotation' not loaded for item (2462/1/HZH2H3QY)"]
If you go to Tools → Developer → Run JavaScript and run the following code, what's the result?
return await Zotero.DB.valueQueryAsync("SELECT COUNT(*) FROM items WHERE itemTypeID=(SELECT itemTypeID FROM itemTypes WHERE typeName='annotation') AND itemID NOT IN (SELECT itemID FROM itemAnnotations)")
Thank you. Didn't run JavaScript yet, because it seems that simple rebooting addressed the problem. If it occurs again, I'll have your suggestion in mind. :)
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return await Zotero.DB.valueQueryAsync("SELECT COUNT(*) FROM items WHERE itemTypeID=(SELECT itemTypeID FROM itemTypes WHERE typeName='annotation') AND itemID NOT IN (SELECT itemID FROM itemAnnotations)")