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.
if ('undefined' !== typeof jest) {
      warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber);
    }
  }
  return mountEffectImpl(
    UpdateEffect | PassiveEffect,
    HookPassive,
    create,
    deps,
  );
}
function updateEffect(
  create: () => (() => void) | void,
  deps: Array<mixed> | void | null,
): void {
  if (__DEV__) {
    
    if ('undefined' !== typeof jest) {
      warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber);
    }
  }
  return updateEffectImpl(
    UpdateEffect | PassiveEffect,
    HookPassive,
    create,