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.
const latestGetSnapshot = refs.getSnapshot;
      const latestSetSnapshot = refs.setSnapshot;
      try {
        latestSetSnapshot(latestGetSnapshot(source._source));
        
        const currentTime = requestCurrentTimeForUpdate();
        const suspenseConfig = requestCurrentSuspenseConfig();
        const expirationTime = computeExpirationForFiber(
          currentTime,
          fiber,
          suspenseConfig,
        );
        setPendingExpirationTime(root, expirationTime);
      } catch (error) {
        
        
        
        
        latestSetSnapshot(
          (() => {
            throw error;
          }: any),
        );
      }
    };
    const unsubscribe = subscribe(source._source, handleChange);
    if (__DEV__) {
      if (typeof unsubscribe !== 'function') {
        console.error(
          'Mutable source subscribe function must return an unsubscribe function.',