In the job status column for the multijob subjobs, not all the jobs' statuses are updated. When some of the subjobs are executing, their balloons stay grey and don't flash. When those jobs complete, the balloons stay grey instead of displaying blue, for example. At first it looked like the jobs that were executing on different slave from the parent multijob were the ones affected, but later on, other subjobs that exected on the other slave had their statuses displayed OK. Jenkins version 1.553, Multijob plugin version 1.13.