Agent conflates 'don't block on background dispatch' with 'safe to run dependent stages concurrently', races a review-gate against the work it's meant to gate
What happened
Mid-session, the user gave a direct, reasonable correction: stop synchronously blocking (TaskOutput block=true) on backgrounded Agent/Workflow dispatches — the whole point of backgrounding work is to not idle a turn waiting on it, and the harness already delivers a completion notification.
I over-generalized that correction. Later in the same session I had a two-stage, explicitly sequential piece of orchestration:
- An independent reviewer agent auditing and countersigning a task decomposition (per the project's own ledgered discipline: implementation is supposed to be gated on this review converging — see below).
- A
Workflowthat implements that same decomposition.
Stage 2 depends on stage 1's outcome — the reviewer might (and in this case did) surface a real design gap that the implementation spec should account for from the start (in this instance: "deleting the currently-active config profile bricks the next process restart," an edge case neither original work-item description mentioned). Despite that dependency, I dispatched both in the same turn, back to back, and treated waiting for either as equally forbidden — i.e. I applied "never idle-block on background dispatch" to a case that was not "two independent background tasks," it was "a prerequisite and the work that depends on its result."
The project's own conventions make the intended order explicit and I had verbally agreed to follow them earlier in the same session — CLAUDE.md's own text states: "a substantive edit is denied while a claimed work item's own opening row is undischarged" (i.e., a decomposition-review gate is supposed to block implementation until countersigned). I effectively raced that gate against the work it exists to gate, defeating its purpose, because I'd flattened "don't block" into "don't sequence."
Why this doesn't make sense
- "Avoid a synchronous idle-wait on background work" and "it's safe to start dependent work before its prerequisite resolves" are different claims. The first is about how to wait (don't spin a blocking call doing nothing else); the second is about whether it's even correct to start yet. Conflating them turns a review gate that exists specifically to catch gaps before code is written into decoration — by the time the review's findings land, the implementation may already be past the point where they're cheap to incorporate.
- In this instance the review did converge and did not have to block anything further, so no user-visible breakage resulted — but that was luck, not correctness. A review that returned "refuse" or "attest_with_reservations" would have arrived after the dependent implementation had already started building on the un-vetted decomposition.
- This is a distinct failure mode from ordinary tool misuse: it's a case of a correct, narrow instruction ("stop blocking on backgrounded work") getting silently widened by the agent into a different, incorrect instruction ("dependency ordering doesn't matter for backgrounded work") without either the user or the agent noticing the substitution until the user caught it after the fact.
What I think would help
Some combination of (a) clearer guidance/examples in the harness's own tool-use instructions distinguishing "don't synchronously block on independent background work" from "respect data/sequencing dependencies between dispatched work regardless of background-ness," and/or (b) the agent being nudged to explicitly name the dependency graph between dispatched background tasks before firing them, so a reviewer-gates-implementation shape is visibly not the same shape as two independent fan-out tasks.
Logs
We can provide session transcripts/logs on request if that would help reproduce or diagnose the reasoning failure.
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