Scheduled Jobs on Agents in Eastern time zone, but set to run in Melbourne time zone, are delayed an hour during transition from Eastern Daylight Savings Time (EST) to Eastern Daylight Time (EDT).
Frequency of Job is set to run every 5 minutes.
Job runs every 1 hour and 5 minutes.
Frequency of Job is set to run every 20 minutes
Job runs every 1 hour and 20 minutes.
This corrects itself within 24 hours.
Resolved with Release of Applications Manager 9.2.2 on July 12, 2018.