It would be fine to see only those User Stories, but have opportunity (via query modification) to see tagged Tasks also. In fact, it doesn't depend on specific view mode, but Tree-view mode appered in my mind first as it allows me to see nicely hierarchy between issues.
Could you please clarify - you would like to see only such tickets (with tag) in a tree view and other tickets in normal view?
Sorry Lüba if my question confused you.
It would be fine to see only those User Stories, but have opportunity (via query modification) to see tagged Tasks also. In fact, it doesn't depend on specific view mode, but Tree-view mode appered in my mind first as it allows me to see nicely hierarchy between issues.
Thank you for clarification! Unfortunately, such query is not possible. You either see all Tasks and User stories with the tag or just one type.