As per today, it is possible for a JS test with a balancer issuing random moveCollection commands in background to complete  its execution and move to the teardown phase while a moveCollection is still inflight.

Such a situation was known to lead to false inconsistency errors raised by the teardown hook in charge of cross-checking the content of config.collections/chunks against config.placementHistory: SERVER-87051  introduced some extra logic to ignore metadata on regular temporary resharding collections (<dbName>.system.resharding.<originalCollUUID>) from the affected cross checks, but the filter is not able to also capture temporary collections of timeseries namespaces (<dbName>.system.buckets.resharding.<originalCollUUID>).