The full timing info is there for navigation timing, which is already available at document creation (which happens right after the handover).

This is a spec bug, while implementations/WPT test the right behavior.

• At least two implementers are interested (and none opposed):
  Already implemented
• Tests are written and can be reviewed and commented upon at:
  • https://wpt.fyi/results/navigation-timing/nav2-test-instance-accessible-from-the-start.html?label=experimental&label=master&aligned
• [x Implementation bugs are filed:
  • N/A
• [x MDN issue is filed: N/A
• The top of this comment includes a [clear commit message]

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