What you have experienced is, I believe, a re-occurence of the out of memory problem. It has been reported many times on this board. It was much worse two updates ago but still happens from time to time. If you monitor your RAM usage (using for example Task Manager) you can see the RAM use increase until there is none left then the program crashes. I still get this from time to time but no where near the frequency of two updates ago.
What I described was a specific sequence of steps that cause the program to terminate. It does not involve unusually high memory use and always happens with the same sequence of steps. Just an unusual bug that I've learned to keep away from. In other words when I edit something I always press Tab or Enter to finish the edit.