What
At the end of each turn Claude Code estimates how much of the conversation's space is used. When that estimate takes longer than its time limit, the late result is now applied with an after_boundary marker. The debug message about the slow estimate is unchanged.
Why
A slow estimate is now handled differently when it finally arrives.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say what `after_boundary` changes about how the late estimate is used.