jvstein opened a new pull request, #62750:
URL: https://github.com/apache/airflow/pull/62750
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We are upgrading an Airflow 2.11.0 system to 3.1.7 and encountered a problem
where clicking a Task Group in the grid UI was giving a 404 response in the
Task Instance detail pane.
<img width="1295" height="403" alt="taskgroup_404"
src="https://github.com/user-attachments/assets/8db31fc3-8d7e-4658-8343-e3fb3970441d";
/>
I traced it back to a missing `dag_id` filter when building the list of task
instances. The initial query on `dag_run` happens without a `dag_id` filter,
which is very likely to return a different DAG sharing a similar schedule (e.g.
run_id `scheduled__2026-02-03T04:00:00+00:00`). That DagRun is then
subsequently used for later filtering and the relevant downstream logic can't
find the task group being used for filtering.
This change adds the `dag_id` filter when querying and rejects inputs that
don't include a valid `dag_id` to filter when `dag_run_id` is specified.
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