Recent Fenix Nightly App link startup profile: https://share.firefox.dev/39UxdX8 This includes the fix for bug 1621340 and saves 130ms that were spent re-initializing SafeBrowsing in response to preference changes.
Bug 1550073 Comment 12 Edit History
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Recent Fenix Nightly App link startup profile: https://share.firefox.dev/3fvxX6q This includes the fix for bug 1621340 and saves 130ms that were spent re-initializing SafeBrowsing in response to preference changes.