Steps to reproduce:

1. Start a scheduled job.
2. While the job is running, go to the history tab on the left menu.
3. Expand the job result details of a previous run.
4. The expanded job details will be collapsed automatically in couple of seconds.

A further inspection shows that this behaviour is caused by a call to /EPiServer/EPiServer.Cms.UI.Admin/ScheduledJobs/GetRunningStatus?id={guid}

Expected result:

The expanded job details will keep their state after the job status is checked.