It seems as the Warm and Cold nodes are hit by this issue. We have about 50 Elastic-Agents with about 20 Policies.
What I've found in the kibana log
2023-06-23T16:37:15.944604+02:00 XXX kibana[79289]: [2023-06-23T16:37:15.944+02:00][ERROR][plugins.taskManager] [WorkloadAggregator]: ResponseError: search_phase_execution_exception
2023-06-23T16:37:15.944672+02:00 XXX kibana[79289]: #011Root causes:
2023-06-23T16:37:15.944716+02:00 XXX kibana[79289]: #011#011parse_exception: operator not supported for date math [+12500ms]
Elasticsearch logfile doesn't seem to have anything interesting.