Duplicating events/notes in Full Calendar

Help
1

What I’m trying to do

I have a problem with Full CAlendar plugin. Some events/notes are duplicating or even triple! For example I create an event in Meetings calendar, and same event appears in General calendar too. Very annoying. It seems like this started after Templater plugin was installed and enabled. What could be the first steps to fix this problem?

Things I have tried

Right now, Templater is disabled, but the problem persists.

2

For those curious or dealing with the same problem. Executing Full Calendar - Reset Even Cache command deals with this problem. Duplicate events will be deleted. This works on standalone PC app and Android app as well.