Calendar event keeps popping even though I've dismissed it

I have an event in my calendar that keeps popping up. I dismiss it, but then a few
seconds later the reminder pops up again.

This is obviously some sort of bug. I’ve tried doing a dbrepair too, no difference.

Hi, we know about this issue.

Please send me one of these undismissable events together with your GData logs, go to tools - settings - advanced, check GData under your account, apply and restart eM Client.

Simulate steps that leads to your issue and after that send logs… to together with this topic’s URL in subject.

then you can turn logging off.