Android App - Calendar Blue Dot Indicates An Event But There Is No Event

Hello there

I am loving the new Android app and I believe it is a great step forward for Zoho however I believe I have an issue with the Calendar.

If I look at the Calendar for October and November in the App there are many days which display a Blue Dot which I guess signifies there should be an event even though there isn't an event in my calendar.

This is what I see...

On 2nd October there is no Blue dot. If I tap on the date in the App it immediately displays 'No event ' which is correct.
On 9th October there is a Blue Dot and if I tap on it it doersnt do a read and it returns the content of the event

On 3rd October there is a Blue dot. If I tap on that date the app does a read and eventually return the result 'No Event'. No event is correct but why is there a Blue dot?

As I say there are a lot of days with Blue dots but no events which is very confusing when looking at the calendar to find free days.

Thank you