No more calendar name in event templates?

Since I upgraded to V3, the calendar name that appeared previously in the event templates is no more displayed. The data doesn't seem to be still available in the FrontEnd Object, only the pid refers to the event parent.

Is it intentional, or a bug?
How can I solve this? As I manage several calendars to categorize several types of different events, it is mandatory that I can display the calendar name whenever I refer to an event.

Thanks for helping.