Problem

The test jstests/core/query/explain/explain_includes_command.js is missing the does_not_support_stepdowns tag that all other explain tests in the same directory have. When this test runs in a stepdown passthrough suite (e.g., sharding_kill_stepdown_terminate_jscore_passthrough), the config server primary is killed, causing {{db.runCommand(

)}} to return {{

}} with a "could not get updated shard list" timeout error. The subsequent assertion assert("command" in explainOutput) fails, and the shell exits with code -3.

Evidence* BF-45241 tracks the build failure

• Test log shows: "errmsg" : "could not get updated shard list from config server :: caused by :: Request timed out"
• Shell exit code 4294967293 (unsigned -3, indicating uncaught JS exception)

Scope of Work

• jstests/core/query/explain/explain_includes_command.js — add does_not_support_stepdowns to the @tags list

Acceptance Criteria

• The test is excluded from stepdown passthrough suites
• The test still runs in non-stepdown suites