darkag commented on issue #42215:
URL: https://github.com/apache/airflow/issues/42215#issuecomment-2506136261

   Same problem on 2.10.3, but as @leetdavid said, it occurs only when there is 
a retried task. We're using MySQL for the database, so it doesn't seem to be 
just a timezone issue.
   
   For me, it seems more related to the fact that the Gantt graph attempts to 
show task executions present in task_instance for a run_id, but within the 
period between the queued_at and end_date of the dag_run. (If I manually change 
queued_at to encompass all task_instance, the flickering stops.)
   
   The minimum date for the Gantt graph shouldn't be queued_at but rather the 
minimum start_date of task_instance


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