You'll notice
Useful2 Signal2
Repeated messages report the session idle less often, though the deciding condition is hidden.
What's wrong with this entry?
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What
On the path that handles a repeated user message, the session now reports itself idle only when an additional condition is false, so some cases that previously flipped to idle no longer do. What that extra condition tests is not visible in the shipped code.
Evidence
notifyStateChanged("idle")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.