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Sebastian Markbåge
b04254fdce
I found a bug even before the Activity hydration stuff. If we're hydrating an Offscreen boundary in its "hidden" state it won't have any content to hydrate so will trigger hydration errors (which are then eaten by the Offscreen boundary itself). Leaving it not prewarmed. This doesn't happen in the simple case because we'd be hydrating at a higher priority than Offscreen at the root, and those are deferred to Offscreen by not having higher priority. However, we've hydrating at the Offscreen priority, which we do inside Suspense boundaries, then it tries to hydrate against an empty set. I ended up moving this to the Activity boundary in a future PR since it's the SSR side that decided where to not render something and it only has a concept of Activity, no Offscreen. https://github.com/facebook/react/pull/32863/commits/1dc05a5e2222e18fc3a2062ee1bd957109e21344#diff-d5166797ebbc5b646a49e6a06a049330ca617985d7a6edf3ad1641b43fde1ddfR1111