Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.274 ·

Query engine events now dispatched through a frame notifier instead of applied inline

Engine events during a query are now deferred to a frame boundary instead of applied immediately

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaElsewherewhat it touches
KindInternal Changesin v2.1.274,
Under the hood

Engine events during a query are now deferred to a frame boundary instead of applied immediately

What

In the main query-turn handler, incoming engine events used to be applied straight away. They are now routed through a frame notifier that defers applying them until a frame boundary is reached.

Why

Deferring event application this way changes the timing of when state and UI updates take effect during a turn, though the finding doesn't specify the visible effect.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat user-visible difference this timing change produces is not stated.

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