The test stale_config_error_for_direct_shard_operation.js expects to run insert operations on a node without routing information by forcing a stepup of a secondary. The test runs inside a withRetryOnTransientTxnError block. If the function is retried due to a transient error, the second time around a new primary would step up, which can be the original primary, which has updated routing information, breaking the expectations of the test.