No data feed with OnBar()

Hi,

I'm checking if my minute OnBar() event is occuring at the right timing by doing 

Print(Server.Time);

From the log, I notice there are times when OnBar() event is not occuring.

For example, in the following screen shot, you can see the timestamp after 21/02/2023 00:59:01.171 

is 21/02/2023 01:02:02/693 where 01:00:00, 01:01:00 timestamp are missing.

Is this some kind of bug of cTrader or something? 

and How can we prevent this from happening?

Thank you very much