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.
current: Fiber | null,
  workInProgress: Fiber,
  Component: any,
  shouldUpdate: boolean,
  hasContext: boolean,
  renderExpirationTime: ExpirationTime,
) {
  
  markRef(current, workInProgress);
  const didCaptureError = (workInProgress.effectTag & DidCapture) !== NoEffect;
  if (!shouldUpdate && !didCaptureError) {
    
    if (hasContext) {
      invalidateContextProvider(workInProgress, Component, false);
    }
    return bailoutOnAlreadyFinishedWork(
      current,
      workInProgress,
      renderExpirationTime,
    );
  }
  const instance = workInProgress.stateNode;
  
  ReactCurrentOwner.current = workInProgress;
  let nextChildren;
  if (
    didCaptureError &&
    typeof Component.getDerivedStateFromError !== 'function'
  ) {