[MM3-users] "Unsubscribe all" failed with large lists

We are currently testing latest mailman suite (w/Postorius 1.3.3) and notice that that the the API call /3.1/lists/listname.domain/roster/member failed when using "Unsubscribe all" on Postorius for a large list (~15000 members). Not sure whether the issue has been already reported or not.