Using the Synchronisation via URL to my Google Calendar.
It works fine for public events.

Private events are shown as "Busy" (German: "Beschäftigt"), no title, no details.

(With the External Calendar everything was shown.)

It's maybe good for very sensitive communities but is there an option to change that?
I would like to see the real titles etc. in my phone's calendar.
Could we add a configuration for that?