I haven't experienced the sync problems, but I believe you. Also, I use mobile the majority of the time so it's entirely possible I just don't use that feature enough to experience that pain.
Another annoyance about the sync is that it is only recent episodes that are synced. When you get a new device you lose the status of most of your episodes.
> find the words inside the audio of any episode
Woah, that I didn't know about!