It works if you don't change formatting, don't edit the same section, don't rearrange chapters and don't have lots of changes or a large document. You do any of

It works if you don't change formatting, don't edit the same section, don't rearrange chapters and don't have lots of changes or a large document. You do any of that, and the application crashes. It's good for a small fix, but not something to rely upon in your main documentation workflow.