15th February 2017, 22:15
Maybe this is something for the kde forums or even bug tracker.
I personally have owncloud/nextcloud using with korganizer (though still kde4libs based version most of the time) and that works just fine with syncing.
I can only assume that korganizer maybe does not directly use the Google Calendar but just downloads its items to its personal calendar. Does it look like this to you ? Do you see your Google Calendar in the bottom left and use it ?
I personally have owncloud/nextcloud using with korganizer (though still kde4libs based version most of the time) and that works just fine with syncing.
I can only assume that korganizer maybe does not directly use the Google Calendar but just downloads its items to its personal calendar. Does it look like this to you ? Do you see your Google Calendar in the bottom left and use it ?