I primarily noticed this in stillmoona while doing DoN missions. When toons got stuck inside of the baths in the stillmoon temple while doing a nav to a destination or a toon, they would invariably CTD without error message after a period of time if I failed to notice and interrupt a nav they were engaged in. Over the past month since I discovered this I've found this issue occurs in some other zones as well, though there's no guarantee that every single toon that is stuck will suffer this issue either. In stillmoon however, it's extremely repeatable with high regularity on virtually any toon from my perspective.