What
A new fastModePerSessionOptIn setting makes fast mode non-persistent, so each new session starts with fast mode off.
Details
- When
true, fast mode does not carry over between sessions — users must re-enable it each session - Useful for users who want fast mode available but not always on by default
Evidence
Setting description (search for "When true, fast mode does not persist across sessions")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.