Same events in multiple calendars are only displayed once

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Hi.

I use DAVdroid and SOGo with my colleagues.
We noticed that same events in multiple calendars are only displayed once in Android.

Example :
I (Damien) have invited a colleague (Christian) to a “Test” event at 18 and he accepted it.
My calendar is in black in SOGo, Chistian’s calendar is in grey :

We have the same thing in Thunderbird (with SOGo connector/integrator) (Christian’s calendar in blue) :

But on my Android phone (in S Planner app and also Google Calendar app), my “Test” event is not displayed :

Sometimes, after resync, the event is swapped : only my “Test” event is displayed and not Christian’s event.

It’s a very simple event (no recursion, etc.), here is the ICS file (from my calendar) :

BEGIN:VCALENDAR
PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Europe/Paris
X-LIC-LOCATION:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CREATED:20150602T104041Z
LAST-MODIFIED:20150602T104055Z
DTSTAMP:20150602T104055Z
UID:ef62d894-872b-4931-a428-498663af506c
SUMMARY:Test
ORGANIZER;PARTSTAT=ACCEPTED;ROLE=CHAIR;RSVP=TRUE;CN=Damien:mailto:
 damien@xxx.fr
ATTENDEE;PARTSTAT=ACCEPTED;ROLE=REQ-PARTICIPANT;CN=Christian:mailto:
 christian@xxx.fr
DTSTART;TZID=Europe/Paris:20150603T180000
DTEND;TZID=Europe/Paris:20150603T190000
CLASS:PUBLIC
X-MOZ-GENERATION:2
TRANSP:OPAQUE
SEQUENCE:1
END:VEVENT
END:VCALENDAR

Here is the ICS from Christian’s calendar :

BEGIN:VCALENDAR
PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Europe/Paris
X-LIC-LOCATION:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CREATED:20150602T104041Z
LAST-MODIFIED:20150602T104911Z
DTSTAMP:20150602T104911Z
UID:ef62d894-872b-4931-a428-498663af506c
SUMMARY:Test
ORGANIZER;ROLE=CHAIR;PARTSTAT=ACCEPTED;CN=Damien;RSVP=TRUE:mailto:
 damien@xxx.fr
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED;CN=Christian:mailto:
 christian@xxx.fr
DTSTART;TZID=Europe/Paris:20150603T180000
DTEND;TZID=Europe/Paris:20150603T190000
CLASS:PUBLIC
X-MOZ-GENERATION:3
TRANSP:OPAQUE
SEQUENCE:1
END:VEVENT
END:VCALENDAR

I use Android 4.4.4 and DAVdroid 0.8.0.

Hi Damien,

DAVdroid is responsible for synchronizing. What’s displayed on which device or calendar app is not being altered by DAVdroid in any way. DAVdroid gets the corresponding events from the server and stores it in Androids standard calendar storage. That’s the point where DAVdroid finishes it’s job. From there the calendar app accesses the events and displays them in the way they like. Below is an image that describes the play-together of the different components involved in the sync process!

Is the event shown in the List view?

The event is only displayed once in the List view (same view as Calendar view).

The event is only displayed once in the List view (same view as Calendar view).

What do you mean by “same view as the Calendar view”? I want to make sure that it’s not a “rendering feature” of the calendar day view.

Hi.
Only one event is displayed in the List view (the same event displayed in Calendar view).