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.
Scheduler.unstable_yieldValue('layout foo destroy');
            };
          }, [foo]);
          Scheduler.unstable_yieldValue('render');
          return null;
        }
        act(() => {
          ReactNoop.render(<Child bar={1} foo={1} />, () =>
            Scheduler.unstable_yieldValue('Sync effect'),
          );
          expect(Scheduler).toFlushAndYieldThrough([
            'render',
            'layout bar create',
            'layout foo create',
            'Sync effect',
          ]);
          
          expect(Scheduler).toFlushAndYield([
            'passive bar create',
            'passive foo create',
          ]);
        });
        
        
        act(() => {
          ReactNoop.render(<Child bar={1} foo={2} />, () =>
            Scheduler.unstable_yieldValue('Sync effect'),
          );
          expect(Scheduler).toFlushAndYieldThrough([
            'render',