Regression: Team Calendar no longer displays field name giving its date

Our IT folks recently (May 30 '13) updated some plug-ins on JIRA and Confluence (not sure exactly what got updated) and now our Confluence Team Calendars show JIRA issues without also displaying the name of the Custom Field that put the item on the Calendar, which previously it did.

Previously, the Calendar showed both the Issue's Summary as well as the name of the Custom Field that caused it to be placed there on the Calendar. We used this to show a series of milestones for an Issue (which we store as custom fields in a JIRA issue) on the Calendar. But now, each Calendar entry just shows the issue's Summary and we can't tell what milestone that Calendar entry it's representing, thus making these Calendars unusable for us.

Could this be related to https://ecosystem.atlassian.net/browse/JICAL-24 ?