Unclear What consumed the dropped spawn field, and whether its removal has any visible effect, is not stated.
What
When Claude Code looks up which agent a fork (a duplicated subagent) should target by its subagent type, a successful match now returns only the matched agent. Previously it also returned the original spawn payload (the data describing how the subagent was launched) alongside the agent.
Why
Dropping the spawn payload from this result means any code that relied on seeing the original spawn data after a successful fork lookup no longer gets it, though the finding does not say what depended on it.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What consumed the dropped spawn field, and whether its removal has any visible effect, is not stated.