After updating to 8.0.2 my private calendar doesn't show any meetings i have clicked on "Tentative". I guess all meeting i have accepted are shown correctly. But where are all my tentative meetings? in version 7 i guess everything worked fine and showed me accepted and tentative meetings in my private calendar.

we have some shared calendars for each department. i can see all meetings in shared calendars and i can see, that i was invited to that meetings. but how can i change "tentative" to "accepted"?