Context:
We occasionally see random stack traces in our IT setup related to closed client instances of the engine client. .e.g https://ci.optimize.camunda.cloud/view/all/job/camunda-optimize/job/master/4173/testReport/junit/org.camunda.optimize.rest.eventprocess/EventListRestServiceIT/Integration_and_migration_tests__and_static_analysis___IT_Latest___getEventCounts_userAuthorizedAsPartOfGroupWithSortCriteria_String__SortOrder__1_/

AT:

• the cause is identified and fixed