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.
function Foo({signal}) {
        return (
          <Suspense fallback="Loading...">
            <Bar signal={signal} />
          </Suspense>
        );
      }
      let setLabel;
      function Bar({signal: newSignal}) {
        const [counter, setCounter] = useState(0);
        if (counter === 1) {
          
          
          Scheduler.unstable_yieldValue('Suspend!');
          throw thenable;
        }
        const [signal, setSignal] = useState(true);
        
        if (signal !== newSignal) {