Repro: https://codesandbox.io/s/fast-water-4i4jb

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
revealOrder,
              revealOrder.toLowerCase(),
            );
            break;
          }
          default:
            console.error(
              '"%s" is not a supported revealOrder on <SuspenseList />. ' +
                'Did you mean "together", "forwards" or "backwards"?',
              revealOrder,
            );
            break;
        }
      } else {
        console.error(
          '%s is not a supported value for revealOrder on <SuspenseList />. ' +
            'Did you mean "together", "forwards" or "backwards"?',
          revealOrder,
        );
      }
    }
  }
}
function validateTailOptions(
  Mode: SuspenseListTailMode,
  revealOrder: SuspenseListRevealOrder,
) {
  if (__DEV__) {
    if (Mode !== undefined && !didWarnAboutTailOptions[Mode]) {
      if (Mode !== 'collapsed' && Mode !== 'hidden') {