What
The activity keep-alive settings now include a resumeTouches option, which can be true or false. It is false by default, and it also falls back to false if the value cannot be read. It sits alongside touchIntervalSeconds and activityWindowMinutes.
Why
The option appears to control whether a session is marked as active when it is resumed, and it does nothing unless it is turned on.
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The writer flagged doubt
It is not clear what turning this option on does or where it is set.