Jira created duplicated jobs for "com.atlassian.jira.plugin.ext.bamboo.service.PlanStatusUpdateJob" scheduler everytime Jira is restarted:
Problem happens to Jira instance where Bamboo is not used as well.
There's only single job for the schedule.
New job is created for the schedule each time Jira is restarted.
Delete the jobs from the database. You may retrieve the list of jobs using this SQL command:
However, duplicate jobs will continue to happen upon each Jira restart.