JQL have a feature for "Updated" but that works with "Date" not with "Users".
If you don't have a custom field that stores who last updated the ticket, you won't have any way to do what you want unless you use plugins or DB queries (like what have been initially suggested).
Hi Community! I’m Elaine, Confluence Product Manager. You may have read my earlier post about page tree in space navigation sidebar. I'm excited to share another improvement that helps you organize ...
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