Just to be sure, previously you said you set

events_max=1

and

buffered_log_max=1

, can you confirm again that

events_expiry

is at 1 or a low value where you would expect the query to expire the events?

now i have

events_max=1

 and 

buffered_log_max=1

and events_expiry=10

Ok! I would say that this looks like a bug. Could you open an issue with all the configs you have given so that we can reproduce it and have a better look at it? Thanks!

sure thing