Repro case with a master build: https://codesandbox.io/s/stoic-mcnulty-dhygf?file=/src/App.js:668-703

Expected: we see content after a second.
Actual: fallback never resolves.

This happens in a sequence of:

1. Normal update
   - which suspends
2. Idle update
   - which also suspends
3. An unrelated normal update immediately followed by a ping (so they're batched)
   - here, we decide to stay on fallback, but should've shown the content

If you remove `_setVersion(v => v + 1);` on line 44 then the issue goes away.
): Fiber | null {
  const updateExpirationTime = workInProgress.expirationTime;
  if (__DEV__) {
    if (workInProgress._debugNeedsRemount && current !== null) {
       
      return remountFiber(
        current,
        workInProgress,
        createFiberFromTypeAndProps(
          workInProgress.type,
          workInProgress.key,
          workInProgress.pendingProps,
          workInProgress._debugOwner || null,
          workInProgress.mode,
          workInProgress.expirationTime,
        ),
      );
    }
  }
  if (current !== null) {
    const oldProps = current.memoizedProps;
    const newProps = workInProgress.pendingProps;
    if (
      oldProps !== newProps ||
      hasLegacyContextChanged() ||
       
      (__DEV__ ? workInProgress.type !== current.type : false)
    ) {