You'll notice
Useful1 Signal1
A debug log that wrote per-frame render timings to a file no longer exists.
What's wrong with this entry?
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What
The debug path that appended per-commit gap, reconcile and slow-frame lines to a file under an environment variable is gone, and that variable no longer appears anywhere in the build. What remains is a scroll-commit duration measurement plus the layout and render callbacks.
Evidence
scrollCommitStartedAt
Strings lifted out of the shipped bundle, so the claim above can be checked against them.