Extracted from https://github.com/facebook/react/issues/12643.

We're currently diff a host node in the complete phase even if it has bailed out in the begin phase. By itself, this just means we're doing a little bit more work than necessary. But it also has some observable effects. In particular, https://github.com/facebook/react/issues/13424 (which by itself would be very rare and probably not worth fixing) is made worse because we end up committing update to inputs from another component.

I have a fix for this in https://github.com/facebook/react/pull/13423. Filing this for posterity.
while (node.sibling === null) {
      if (node.return === null || node.return === workInProgress) {
        return;
      }
      node = node.return;
    }
    node.sibling.return = node.return;
    node = node.sibling;
  }
}
let updateHostContainer;
let updateHostComponent;
let updateHostText;
if (supportsMutation) {
  
  updateHostContainer = function(workInProgress: Fiber) {
    
  };
  updateHostComponent = function(
    current: Fiber,
    workInProgress: Fiber,
    updatePayload: null | UpdatePayload,
    type: Type,
    oldProps: Props,
    newProps: Props,
    rootContainerInstance: Container,
    currentHostContext: HostContext,
  ) {
    
    workInProgress.updateQueue = (updatePayload: any);