Sandbox: https://codesandbox.io/s/cranky-kapitsa-op3jh

Repro: type "a" and then after a second "b"

Expected: Eventually you'll see "ab" in all fields. Pending "..." indicator goes away.

Actual: You'll keep seeing "a" in low pri field. Pending "..." indicator is stuck.
React.useLayoutEffect(() => {
        Scheduler.unstable_yieldValue(`Layout Effect [${props.text}]`);
        return () => {
          Scheduler.unstable_yieldValue(
            `Destroy Layout Effect [${props.text}]`,
          );
        };
      }, [props.text]);
      React.useEffect(() => {
        Scheduler.unstable_yieldValue(`Effect [${props.text}]`);
        return () => {
          Scheduler.unstable_yieldValue(`Destroy Effect [${props.text}]`);
        };
      }, [props.text]);
      const text = props.text;
      try {
        readText(text);
        Scheduler.unstable_yieldValue(text);
        return <span prop={text} />;
      } catch (promise) {
        if (typeof promise.then === 'function') {
          Scheduler.unstable_yieldValue(`Suspend! [${text}]`);
        } else {
          Scheduler.unstable_yieldValue(`Error! [${text}]`);
        }
        throw promise;
      }
    }
    function App({text}) {