Same here with Ubuntu 16.10

libkf5gapicore5 5.1.0

The only way to get my KDE calendar updated is to remove the Akonadi resource and re-add it.

in a VM i experiment this:
opensuse leap 42.2 updated wtih the folowwong repos:
KDE Extra
KDE Applications -16.12
KDE Framework5   - 5.32
Qt5              - 5.9

no sync problem for kaddressbook
no sync problem for korganizer

then
i do same update with my current opensuse but no success.

as you Michael i created again akonadi google contacts and calendar then all is synced but after again i get sync problem.

i assume something is broken in my akonadi data at an upper level.
it is necessary to delete  /home/roubach/.local/share/akonadi/
in futur i will experiment this.

Be careful I broke:
Calibre (I had to install instead the binary flavor supplied by calibre team)
Digikam (I had to revert to marble 16.08)
all apps using kipiplugins. I had to revert to kipiplugins 16.08

Did it help when you deleted  /home/roubach/.local/share/akonadi/ ?
My suspicion is that it is caused by a bug in the software rather than some old data there.

@michael

How do you explain there is no sync problem in a clean installation+updates i mention?

i assume when i installed my operational opensuse then import my pim data akonadi soft was buggy and something has been badly created in the structure.

i did not delete akonadi. i said i will do. i want to be sure to not lost some mails. i never do this and i must be sure of how to proceed.

@philippe, maybe you're right. I am just fed up with removing the akonadi directory every now and then because something in akonadi was messed up and is not compatible any more. :-/
But you have a point with your clean installation, so I'll give it a try as well. Good luck to you; let's see what we find out.

I just tried it. Surprisingly, the configuration of all agents (Mail servers, Google account) was still there so I did not need to re-configure anything. Seems there is information about akonadi hidden somewhere else.

akonadi stores only pim data not pim settings.
Is problem solved?

i found the method:
- quit kontact
- with akonadiconsole stop akonadi server
- delete akonadi data
- start akonadi server
- launch kontact

i made an error akonadi stores pim settings in ~/.config/akonadi

Be careful.

after deleted data then restart akonadi then kontact
for kmail
for all accounts
for receiving
security protocol was not good. id and pw protocol was not good.i use "automatic detection" to restore.
for sending
security protocol was not good. i use "automatic detection" to restore.
for one account path to inbox was not good

problem is not solved!

it remains to delete ~/config/akonadi/

i will experiment this later.

Yesterday there was an update of KDE Applications to 17.03.

Today I experiment there is no more sync problem from G contacts to kaddressbook.

@Michael
can you confirm this?

Depends. If you think the problem disappeared because of the update, then I have to wait until it shows up in Ubuntu.
If you think it is because of your experiments with deleting stuff, I can give it a try. What should I delete to test it?

I proceed same experiment(deleting.local/share/konadi/) as you with no success.
I did not try to delete.config/akonadi/.

The today success is due to update of kde applications to 17.03

Ok, then maybe I will get this in two weeks with Ubuntu 17.04. I will try to keep it in mind to write my results here...

opensuse leap 15.0
kde app 17.12.3
kaddressbook 5.7.3
gapi contact 

no more problem

Hi,
I have the same problem in Opensuse Tumbleweed:

If I change somethin from https://mail.google.com/mail/ca/u/0/#inbox, korganized is not updated

From konganized to Google works perfectly
KDE Extra
KDE Applications -19.12
KDE Framework5   - 5.67
Qt5              - 5.14

It happens from a long time.

I created a new user, in case I had a problem in my file config without success